I'm one of the Airfix building/plane spotting/Air Cadets types. It took me 20 years from my first trial lesson (7 years old) to First Officer. Despite the struggle, I'd happily do it all again.
But....
Just be prepared to accept that you will miss birthdays/weddings/anniversaries/Christmas. Your wife/husband/significant other will get used to attending events alone and having to explain why you're not there. You stand a chance of losing your job several times a year even without your airline being insolvent (sim, medical, etc).
If the above doesn't put you off then I personally still think it's the best job for me, and I have several to compare it against. Just be realistic with what to expect!