How long will this trip take you?

Another impossible question and I’m afraid, again, I don’t have a definite answer.  It will take as long as I am enjoying myself.  My best guess is 3 and a half years but that’s about as accurate as picking the lottery numbers.  I could cycle continuously and finish soon but maybe I’ll stop to work somewhere, maybe I’ll fall in love, maybe I’ll start my own business … the possibilities are endless.