Rainla, you GO, girl!
Have those dreams, dream them, see yourself in them. Yes, probably your dreams and desires will change, probably you wont get exactly what you want, but you might get close to it.
And on the way to getting (or even missing) your ultimate dream, you will achieve a lot of it.
Good on you for not allowing society pressure you into the conventional route of how to run your life!
You are NOT crazy!!