I don't strongly support it nor strongly oppose it, mostly because I'd never want to use it.
But I would like to see it legalized purely so it can be taxed, kinda controlled and screw over the dealers. Some people do say it is harmful and should remained but but, alcohol. When people are sensible with it, like responsible drinkers, then everything would be fin but like with everything there will always be abuse.
It has been said to ruin people's lives, but so does alcohol in some cases, smoking and gambling which are all legal. I don't think it'll encourage people to buy it now that it's legal because all the people that buy it now from dealers will just continue. But if it was legalized it could be regulated like alcohol is, people just need to be wise and not harm themselves or anyone.
I also hope that legalizing it could lower crime rates, as people aren't paying ridiculous prices from a dealer tot he point they get hooked and have to steal/burgle/whatever the hell criminals do. And in the UK legalizing it would mean being able to tax it so it covers their NHS bill, as alcohol's tax keeps being increased because of this and the tax will go down when more people drink responsibly.