OldOldGamer: I m seeing an increase of games using permadeath.
I appreciate it.
On the other hand I play games to relax.
Forcing permadeath is a potential obstacle to my enjoyment.
Should the games have permdeath as option and not forced?
The use of permadeath and other roguelike-related elements, such as procedurally randomized levels, started becoming a trend probably six to ten years ago; I would say their use has long since plateaued.
You may be just noticing the trend now, but it's definitely become a big enough deal for a ton of people to have long ago started to get sick of (and to complain incessantly about) games advertising "roguelike elements".
Next thing we know, you'll be saying, "Say, zombies seem to be getting more and more popular recently." ;P
With regards to your question: It really depends on the game.
The mechanic fits better in some genres than others, and tends to be much more tolerable in short, "run-based" games built for high replayability.
In a long, heavily story-based RPG, for example, it's best if permadeath is just an option. Something like
Spelunky, on the other hand -- a game made to be played through in under an hour -- would become far more trivial if you could continue from a level you died on.