Happens to me a lot too
I think it's because I'm female, and the gung-ho young bucks simply don't want to train with a girl
It doesn't matter who you train with, you can still practise your Aikido (any aspects of it that you can safely work on with that person).
Those who only train with their pals are missing a few vital life lessons, not to mention Aikido ones!!
OP I'm sorry that has been your experience. Hope you found a better place