Most of them are scam so don't even bother, and ones that are not, you are going to take longer to ROI than building your own rig
since you nearly missed ETH train you should have hit ROI from that point untill now. If you really did I don't see the point in shutting down your rigs since there is nothing to lose. Even if you didn't you can still make few $$ per month. Better to just leave and see how it will do.
isn't profitability the same as it was before, because now bitcoin is higher? if we account this the thread started should have absolutely no problem in keep mining
No it's not. When ETH mining was starting to get popular you could ROI in about 90-100 days even if your electricity cost was't too low.