Lyxen
Great Old One
Don't like psionics, they sound SciFi.
In addition, it makes magic sound as if there are things that, being mental, it can't handle as well as magic, when it's the other way around, magic is infinite, mental magic is just a tiny subpart of it.
Finally, 5e made the right decision for the right reason, everything is magic, and everything works against everything else. Actually the very first serious implementation of psionic from Eldritch Wizardry and later developed in the AD&D PH (and then all over the place in particular in the MM) had the very serious default of being "beside the rest of the game", and creating "shortcuts" in powerful monsters. Despite their power, the archdevils and demon princes were very vulnerable psionically to PCs with powerful abilities. And this is really bad game design.
Which is probably why most of the tables at which I played AD&D at for decades stopped using psionics or never used them, except for Dark Sun as it was a really special case in which it was basically the one type of "magic" allowed to the PCs, and it made sense in the context. But it was really a local thing.
I think people like psionics for very different reasons, but mostly the fact that you rely just on yourself, not an external source of power, so it's somewhat comforting, and the flexibility since psionics are amongst the original users of "power points" which allow you to use powers of any level as much as you want as long as you are paying the cost without having to worry about slots and their levels. I can get this, but what I don't appreciate is when they also want them to be "outside of magic", because that's a kind of cheating edge with the system that forces the DM to create challenges specifically for you, otherwise, it's way to easy to "sidestep" the normal challenges.
Honestly, 5e is generic and flexible enough that it already supports psionics out of the box without any of the troubles above, so that should be it except if Dark Sun is really resurrected properly...
In addition, it makes magic sound as if there are things that, being mental, it can't handle as well as magic, when it's the other way around, magic is infinite, mental magic is just a tiny subpart of it.
Finally, 5e made the right decision for the right reason, everything is magic, and everything works against everything else. Actually the very first serious implementation of psionic from Eldritch Wizardry and later developed in the AD&D PH (and then all over the place in particular in the MM) had the very serious default of being "beside the rest of the game", and creating "shortcuts" in powerful monsters. Despite their power, the archdevils and demon princes were very vulnerable psionically to PCs with powerful abilities. And this is really bad game design.
Which is probably why most of the tables at which I played AD&D at for decades stopped using psionics or never used them, except for Dark Sun as it was a really special case in which it was basically the one type of "magic" allowed to the PCs, and it made sense in the context. But it was really a local thing.
I think people like psionics for very different reasons, but mostly the fact that you rely just on yourself, not an external source of power, so it's somewhat comforting, and the flexibility since psionics are amongst the original users of "power points" which allow you to use powers of any level as much as you want as long as you are paying the cost without having to worry about slots and their levels. I can get this, but what I don't appreciate is when they also want them to be "outside of magic", because that's a kind of cheating edge with the system that forces the DM to create challenges specifically for you, otherwise, it's way to easy to "sidestep" the normal challenges.
Honestly, 5e is generic and flexible enough that it already supports psionics out of the box without any of the troubles above, so that should be it except if Dark Sun is really resurrected properly...