There are all sorts of things the old testament tells you that you are supposed to do to be a good Jew.
Christians get several of their precepts from it, but lots of things mentioned in the OT are specifically for Jews. The new covenant talks not of tithing (10%), but giving. It is mentioned one time, and even then it is Jesus talking to Jews about what they SHOULD HAVE done (past tense) and even then it is discussing the specific things they tithed and he admonished that they should NOT HAVE ignored the weightier things.
As time goes on, I think less and less of money and God in the same thought process.
Matthew five: 17 Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Sounds to me as if Jesus is saying that what He did not fulfill or alter, or reverse, such as food in Act 10, is still 100% in effect.
Look, you may not like tithing, but churches have to pay their bills too. And all to often it is only a handful that pick up the tab while others just sit back and reap without doing any sowing, watering, tilling, etc.
I’m a pretty smoky Christian, but, in addition to having given my life to Christ, I also tithe. I can loose my temper at times, I can go toe to toe with the best of them and I can use some pretty offensive language at times, but, Like David, I know where I am going and I’m not afraid to pay my share of the freight.
But that’s just me, I am not lecturing you, only giving my side of the logic and argument.