Although I'm only 21, I will throw in my two cents..

It's not too late to start enjoying your life.

But think to yourself - Why do you want to go on lads holidays, regular nights out etc? Is this because your friends all did this and you feel you missed something?

You are right in only going for stunners and not settling for less, so it seems the pickup side of your life is doing okay?

You can always make new friends/acquaintances in life.

Also think, your friends may have been going out, drinking their money up the walls every weekend, but you now have a degree and the commercial pilot... I'm not saying compare yourself to them or anybody else, because you should do what makes YOU happy. If your degree, your career, and the cash it brings with it makes you happy, then why do you feel as though you're missing something.

Maybe you're hitting the point where you want to settle down with someone?

I am of a similar nature, I haven't been on a "lads holiday" (though I've been with a big group of guys and girls), and I don't go out ALL THE TIME.. but it's cool, I enjoy other things in life..

Hope this helps some

Edit: Title "Am I weird", No you're not