good points! though, consider, if you wish...
the things you talked about could all be done by a local church without a building... yet the building will consume a large portion of the money given...
so, if you feel good about giving to a local church, or any christian ministry, by all means, do it!
A very small portion of people's tithes goes toward heat, hydro and other sundty items, not to mention payroll, and that covers our church school (jr kindergarten to grade 12), our cafe, dance school and art school. A church that preaches the word of truth and operates with a good budget and has savings to boot is a church that is very trustworthy with the Lord's provision. I'd tithe to the Lord as a member of a church like ours any day.