I have quite literally lived my whole life with Crohn's disease. My Mother was diagnosed when I was 1 and I was diagnosed when I was 23 (I had shown signs at 13). It can be scary, as any unknown is, but as Nanners said, the good days far out number the bad. I am almost 45 now. I have been married for close to 25 years, I have 2 wonderful daughters, I have worked part-time while raising them and was actively involved in every aspect of their childhood, from field trips to coaching. I have not let CD stop me from doing anything I wanted. I may have had to make some accommodations for it, but I will not let it stop me.
You are doing the best thing you can do which is educating yourself, however, you can't let that education scare you. You need to understand that while all the things you read about MIGHT happen, MOST things wont. A lot of the posters on this site are here because they are extreme cases and are looking for help, or they are newly diagnosed like you and looking for answers. Some of us have had the disease long term and hang around to try to answer questions and help out because we have been there, done that. The majority of the CD patients are out in the world living their life not giving it a second thought. They take their medicine, maybe have a minor flare here or there, but basically, life goes on for them with no more than a blip. Once you find the right diet and medication (or medication combo) there is no reason to believe that your life will be any different than theirs. They are the majority of patients. The ones who can't find the right combo, or can't find the right diet, the extremes, they are the minority. There is no reason, at this point, to believe that you will be one of them.
I would recommend that you read a book called "The First Year, Crohn's Disease and Ulcerative Colitis", by Jill Sklar. She is/was the moderator on another Crohn's forum. She has Crohn's herself, and her FIL is a GI. The book goes through all the things that we go through during the first year after diagnosis, lots of info. I read it probably 15 years after my diagnosis and still found it helpful. There are lots of books out there, you can find many by clicking on the resource directory above.
CD 20 years officially, 30 unofficially. 3 resections '93, '95 '97
Managing with strict low residue diet, keeping symptoms to a minimum. All test show small amount of ulceration, still have occasional blockages. But still have a great time with my 2 daughters and husband!
Prednisone, 6MP,Prevacid, B12 shots, Bentyl, Xifaxan.....