If you want
I want you to earn more merits 
Ok seriously, my opinion != my needs/wants.
It depends very much on the alt doesn't it? At some point someone is going to make an alt that has features retail investors and users find attractive and useful. At which point that alt will do what Facebook did to MySpace.
Bitcoin is not all about features mate, security/hashrate matters. Unless we see some radical change in the mining landscape, I don't think we will see a new champion anytime soon.