Soo waiting 40 min or less is problem for you... Why you need to have transformation ON at all, you can do most of stuffs in normal form...
There are lots of reasons why one might want to change channels while on ssj a few would be:
- lag issues
- party being in different channel
- people come grind where u are grinding
- event happening on different channel
- ccbd
and a few others, not all is black and white
i do agree tho that if you log out (not DC) you should lose ss