Common question: Should I get a TT or MH? Selling after 6mo

I need to go a little off topic here, just to satisfy my own curiosity even though it may be a little personal to you, but, why only 6 months, is there NO interest in RV'ing/traveling beyond that point, I mean there can be many more trips, I don't believe you can see everything of interest in the US in 6 months especially when you add Canada to the mix.
Now back to the subject, I can only give you my personal opinion, as everyone else has, I prefer a Class C.