Vacationing Alone. Experiences?

grum thought this was worth mentioning said
12

Has anybody went on a long vacation alone? What was your experience like? Was it still super fun? Better or worse than with a group?

I was planning on going on a three-week vacation to Europe with a friend of mine but, due to dramatic reasons I would rather not bore you all with, that fell through. I still want to go though!

My mother did not take it well. She thinks I'm going to die or something.