assuming you're in your viable child bearing years without any health complications would u:
A) be willing to have a baby for a gay guy (or couple) who was just a friend(s),
Absolutely. I went through years of infertility and considered how many people were able to have children thanks to the generosity of others. I would have loved to have given many couples the ability to have a child if I could have- gay, straight or otherwise.
and B) be ok if he wanted full custody and not make you a part of the kids life?
Only if I didn't know the couple personally. It would be extremely difficult to have contact with the person and not be able to share in some of the experiences that were made possible by me. Full custody is acceptable as long as I could see photos of the child's progression or something to show the results of my efforts, especially since it is hard for me not to bond with someone elbowing me in the ribs everyday.
more or less just offer to be his(their) surrogate and conceive and carry the baby for him(them)? might not even be close friend but you would have a good sense that he(they) would be good parents and provide well.
I would have more faith in gay parents providing a better homelife for a child. I believe their choice to become parents was well thought out and intentional and they would likely be more motivated to be good parents.
reason i'm asking is I'd really like to have kids of my own (biological) but don't see a traditional marriage with a woman in my future. any ethical issues that might make you decline?