To answer your question, yes - I personally think it's still fun! But, I think that will depend on what opportunities you get laid before you and where your career will end up! Sadly, that's something you won't have ANY control over!
I work for a UK airline (of sorts!) with very varied world-wide flying, days can be long and I get last minute changes to go to work due to the nature of our business, but that's what I like and that's the fun part of the job for me.