I need some reasons...

[Celebuial]

I've also been attempting to learn Quenya and Sindarin. I've been doing it for about two years but I haven't got very far because I'm also studying for my A-levels. Most of my friends think I'm crazy but a few understeand. Some of them have even started to reply to my greetings in the same tongue!

Who cares what your friends think? Eventually they'll get used to it. One guy that I just met in Russia can speek Gailic(ok I cant spell that!) and although he belives that I'm insane and taking things too far, he normally translates anything I say in Elvish to English, French or German (and sometimes Spanish) for our other friends.

I say you should just go for it! I'm sure you're friends have obsessions that you don't understand or share but you just have to accept that that is a part of them, and they'll just have to accept that Elvish is a part of you!