Ephesians 4:11 And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers; 12 For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ
I think these are ministries that are to be supported by our giving. The biggest issue I have is that tithers solely support the church. I haven't ever taught tithing in a way that makes someone feel as they are cursed or going to hell. I have only taught it by example, but I have noticed you have tithers and you have people who give one or two dollars.
Out of the many that disagree with tithing it seems most don't support the ministry. I agree fully with arguments made against mandated tithing. I hope those who take this stance are truly supporting the ministry.