SNGs are a great way to start out. They are/were my first love (I should note that I play mostly on UB, however, where I have found the structure to be much better than any other site).
But, when you get to the point where you are starting to seek out slower structures and deeper starting stacks (as this adds to the skill, vs the "crap shoot" of all in "turbo" type games), then you start to appreciate the cash games where the blinds never increase.
You can push your +EV edges, even when they are small and not have to worry about busting out. All of the sudden getting it in as a 60/40 fave is a good thing, whereas in a tournament you might want to avoid that race at times.
Of course you have to have a long term view here, since you will lose the above "race" quite a bit as only a 3 to 2 fav.
I don't know what to tell you other than if you don't "like"/can't beat the cash game then something is very wrong...
That being said there are differences
in strategy that you need to take into consideration to be successful.