Hi all, new to this forum and find this thread
interesting.
Firstly, would like to share with you all that being a homosexual:
gay/lesbian is no different from being hetro. We are all still as
normal as any other people out there, just that we share a
different interest in love.
I come from a perfect family, though no brothers, I've many male
relatives around the same age as myself, and a caring father. I'm
very close with my mum as well. 
I started finding interest in girls at the age of 18, when I broke
up with a guy for her. So, I would disagree that girls turn lesbian
as they are unable to attract guys. If this statement were to be
correct, there would be a hell lot of lesbians out there!!

So, I'd just like you guys/ gals to understand that we are also
just as normal as any other human species. There're biological
& social factors for one to turn gay. However, up till now,
there's no proof to show that one turned gay due to any stapulated
reasons.
Just sharing my 2 cents worth. 