When I joined EK and we were flying about 75 hours a month, the lifestyle was great. When I left, and we were doing 95 hours + a month, it was simply killing. IMHO on the current EK rosters you can't be expected to survive, something will go wrong with your health.
Prior to EK, I did short haul in Europe for 17 years (not loco). Yes we had earlies in a row and you got tired, but as others have mentioned, a couple of days off and I felt OK again.
With the EK rosters, I felt all I could do on my days off was to sleep to try and feel a bit better to go and get destroyed again. EK these days is a young mans game I feel, if you hang out to 65, I think you could well be dead by 68. ( my opinion only, backed up by no medical research).