I thought about the whole lonely thing. I'm a real big people person and I love being around people all the time, but the thing is none of my friends are into traveling. So the question is, should I let that stop me from doing something I really like and always dreamed of doing or just go ahead and make do with the situation?
No. I've met people while traveling by taking city walk tours, etc. Even easier, I imagine, is staying in youth hostels. You will definately meet people, have chances to converse, etc.
And spending a little time on your own while traveling is a great way to learn more about yourself.