There's diversity between us all, whether it's in an ethnic group, a family, a group of friends, a society or country... There's lots of variety in attitudes, goals, mindsets... Grouping people by their sexual orientation would still yield a lot of differences, as it would if you grouped a bunch of people through some different method. Is that the answer you were looking for?
We're all human and all have attraction to different kinds of people. Regardless of actual sexual orientation, we all have a different taste in men, woman etc. We all feel the same when it comes to those we are attracted to and love itself.
We are all different really in our interests, likes, dislikes in music, books, hobbies, movies etc. One of the few constants is all people have feelings of love, with the only difference being what sexuality they ended up loving. But even those feelings of love are the same feelings experienced by people everyday. So between people there's a lot of differences. Between sexuality alone, not much at all.
I like to think that being gay gives me more insight into what masculinity is and what femininity is. I also think to be gay you are endowed with two souls. One masculine one feminine. Kinda like this Two-Spirit - Wikipedia, the free encyclopedia
Well for us it is normal so being "different" is only what we can tell from what other people say about it.