Are you asking about surgery because you're afraid you'll need it, or have your doctors suggested you should have it?
If you ever do need surgery, it's not necessarily a bad thing. I've had six surgeries (though not all for Crohn's). Minor laproscopic surgeries are really not a big deal at all. I've had a surgery that lasted 20 minutes, I was discharged from hospital the same day, and felt completely back to normal within three days. I've also had a six hour surgery that knocked me out for weeks, and most recently I had a surgery that led to severe complications... but I don't regret having it at all. It's improved my quality of life no end.
Surgery is usually kept as a last resort, but if doctors ever propose surgery as a potential option for you, don't dismiss it automatically. Surgery does not necessarily entail great risks, in some cases its risks and benefits weight up better than medication, it can improve your life and it can save your life.