So far i noticed everything is losing their value when BTC is going down so in the scenario when BTC = 0 all other altcoins = 0. This is stupid.
So what is your exit strategy from altcoins if BTC for some reson goes to 0 and everything is paired with BTC?
I now there is pairs with USDT also on Bittrex. Is this another option to exit from altcoins if BTC goes really down?
I never used USDT before

If you never use usdt then now its your time to try trade in usdt.
Other trader normally think that bitcoin will keep growingbso thats why they prefer to trade in bitcoin pair. So if you are not satisfied with bitcoin pair, just try usdt.