I'm not really trading, but who doesn't like more BTC by selling high and buying again "low"?
Am I wrong or is the mempool being pretty empty a REALLY bad sign for the 50%+ in Price?
Is this the last high for this year? Or am I being too paranoid after 2017

You are just too being paranoid my friend!

This isnt something that fees would go up high if there is a certain price increase in the market.Situations might neither be the same or not on particular days and better just be grateful that the mempool isnt
clogged or in high traffic on where we can make out transactions without having any doubts in problem of stuck transactions due to high traffic.Yes, it is somewhat uncommon but deal with it.
Cherish while it is still cheap on fees and fast transactions because maybe next days the problem would rise up again.