If you are certain that the airline life is for you, then go for it. Best thing you can do is ask airline pilots, if you know any, what they like and dislike about their chosen lifestyle and match it to what you ask from life.
Be very sceptical about their advice regarding training and job opportunities though, as most of us airline pilots are lazy and completely lose interest and track of what it requires to break into the airline world at a given time. What was true a year or two a go, is probably not true anymore, so when a guy tries to lecture you on how it was when he was new 20 years ago, you can use it for nothing but an anecdote.