I did Americorps NCCC and would recommend it, but I don't think it is any less difficult or prone to issues than the peace corps is. The only real difference is that you get to stay within the US, and the commitment time is shorter at between 9-12 months. Many young adults interested in the peace corps do Americorps first. It helps give them an idea of what to expect and helps them get in. They usually have peace corps representatives available to Americorps members and even offer help filling out the applications and preparing to apply.
Americorps wasn't easy. In fact, I think it was probably the hardest thing I've ever done in my life. But, I learned a lot about myself and what I was capable of. Yes, I had some bad experiences, but it never felt like I was in danger, and all the amazing once in a lifetime experiences more than made up for the bad ones. When I walked across the stage to graduate, it was one of my proudest moments. I couldn't believe I made it through. We talk in Americorps about there being life after and life before, and that's really true. You don't look at anything the same after completing the program. It really is life changing. I wouldn't avoid it just because it might be hard or uncomfortable. All that was worth it in the end.
If you have any specific concerns or questions, I'd be happy to answer them by PM.