For me, the numbness typically only comes when I'm very depressed to the point of thinking about suicide or coming very close to SI. So I consider it a nice break, for a little while (a day or less). Then I start wanting to go back to the bad feelings for some reason, though I really don't know why. I guess my theory on it is that the reasons I feel that bad are still there, just building up, and I'm going to have to deal with them at some point so I'd rather they not just build up while I'm numb. I don't know if that makes sense or relates to you at all. Maybe I just don't like feeling numb, and maybe you're the same way.

To quote my favorite band Three Days Grace..."I'd rather feel pain than nothing at all"

Anyway, I hope you get to feeling better (not just numb) soon