When I was active in the church, I never paid tithing. There are people in the church who feel they are obligated to pay it and then they struggle which I do not agree with. My neighbor for example, great guy, awesome family. They struggle. I feel for him. He pays his tithing. I don't see why he doesn't keep the money to pay some of his bills and provide for his family. I don't believe God would be upset with some one in that position. To each their own.
That right there I have no problem with. I didn't always pay it either. I just have no problem with some who decides it is worth it. I may not agree with it but I respect that he believes in something enough to do that.