I love the lifestyle.
Pros:
No office BS to deal with (or at least much less)
On your own, making your own timetable usually
Getting extra time to kill in nice places.
More airmiles than you know what to do with..F class, lounges, hotel upgrades..
It's not 9-5..but I like that. It may be a con for you.
Cons:
Hotels can be sucky sometimes
Traveling frustrations like weather and delays
It can be tough on the body.
Missing home