Do what you want. I'll be the first to tell you I love 121 flying. I love the Embraer. I love the time away from home. (my girlfriend doesn't know about these forums). I like hanging out with the crew. Even the people who complain endlessly on here more than likely enjoy those things. But there is a very real side to being an airline pilot. There is alot more to being an airline pilot than aviation. All of which need to learn before getting in deeper. You need to figure out for yourself if you can handle it. Can you deal with no job security? Can you deal with being away from home? Can you deal with 16 hour duty days? Can you deal with a Coke for breakfast at 4 a.m.? Some people can. Some people can't. Some people envy me. Some people wouldn't want to be me for all the tea in China. I think the best advice anybody ever gave regarding your decision is...sure why not...try it out for a while...but HAVE A BACKUP PLAN!