Really? Why? Is the primary problem ideological, ethnic, economic, sectarian? (a little surprised by your last sentence tbh)
I would think that he's also afraid of the government, the ruler party, AKP. Erdoğan is not only a wannabe dictator but also a stupid one. He has a New Ottoman dream and he sees the Kurdish controversy as a tool in that. Now in hindsight, I think he wanted to have a word on the Northern Syria when he was trying to take down Essad. I think he though he could have authority on the newly designed areas in Rojava(Northern Syria) and he would use those lands as negotiation assets and give some lands from there to the Kurds to process his ongoing so called peace course.
Of course he screwed up with his Syrian policy and now we have to deal also with Isil thanks to him. But a bigger mistake of him was, in my opinion, the figure he has chosen to negotiate his so called Peace Course with. The leader of the PKK, Apo, who should have been executed when we caught him. But instead we revoked the whole supreme punishment just not to hang him. Anyway, Apo is just the leader of a pathetic terrorist group, he didn't lead Kurdish people, he didn't lead Arab people in the Southern Turkey, he didn't lead Turkish people in the Southern Turkey, he didn't lead any sect, religion, ethnic groups or whatsoever in the region and he did nothing to have the tutelage of any of those people, but now, thanks to Erdoğan, he holds a great authority over all people living in those lands, while he's in prison in an isolated island. Erdoğan even put the highest ranked military personnel into prison for the negotiations he was doing with Apo.
Btw, I'm calling it so called peace negotiations because there isn't anything resembling peace with the PKK conflict. PKK continues arming and they are kidnapping 10-16 years old kids to recruit, they are recruiting from the universities, and violence continues in the Southern Turkey while also the Kurdish people gets slaughtered by secretly AKP-supported Isil terrorists. It's just so much for negotiating peace.
What do you think about the Scottish independence referendum? How about the Ukrainian situation? Are there any parallels themes in Turkey? Does belonging to the EU make it easier for the UK to just vote on it? Is it shared language?
Funny you asked about Scottish issue as I recently read one of my fav writers on the subject. He was complaining why all the Scottish and similar conflicts/deals(like ETA, Ira, Wales etc)were bad examples(those are being discussed in Turkey a lot) for comparing with the Kurdish issue.
The Kurdish separatists want a separated independent country(lands) with an independent army. The non-separatist but strong Kurdish nationalists want strong autonomy with legislative, executive power along with the power on the oil and other resources on the area. These are far from what British gave or willing to give to the Scottish, Northern Ireland or Wales. This is the case even though those fellas have their own major history of state/governmental structures. They had kingdoms, states, armies, wars and everything related to state tradition unlike Kurdish people. They had fronts, borders, they stayed much more homogenous, and now they want their independence "back".
As for the referendum, a British friend of mine thinks it's a joke and will be useless. According to him, the majority of the UK don't even think that the Scottish parliament has the power to order such a referendum and he thinks it's unlikely the results will get any recognition to lead a full independence. Maybe UK would give them more independence as in legislative power or etcetera if the results are overwhelmingly pro-independence but otherwise, he thinks it will be noneffective.
Now comparing the referendum with Turkey's situation, I don't think there would be any referendum for the independence of the Kurdish people ever, but there might be one for a federation-like structure for a local Kurdish parliament etc in a couple decades. But for the sake of being hypothetical, even if we had a referendum for a Kurdish independence a la Scottish referendum, the results would be overwhelmingly a big NO to it because, unlike the Scottish referendum, it would have to include all of the Turkish citizens in the voting process, so not a chance. There wouldn't be any chance of positive outcome for the Scottish independence either, if all the UK citizens were voting.
About the Ukraine question, obviously no countries or international organizations think that the Crimea referendum is legal and fair. Only Russia and its a few satellite friends, like Kazakhstan and Armenia recognize it. Beyond being illegal, the results are suggesting it was awfully a fraud. How can the outcome be 97% in favor of joining the Russian Federation when almost the half of the Crimea are Ukrainians, Crimean Turks(Tatars) and other ethnic groups. And that demographics is after only the heavy Russification of the lands. In 1900, 40% were Tatars, and only a quarter of the population were Russian, but they settled over a million Russians there over the time so now, more than half of the population is Russian while Ukrainians are in the minority and the Tatars are almost disappearing at only 12%.