There's a core problem on adding grinding area, if you don't use it you are penalized and if you use it, grinding is awfully tedious, combats with zero design is very boring. So no.
I can see your point. If it exists, you feel obligated to use it, and since you don't like it, it would take away your enjoyment. Personally, I love grinding, but maybe it's best left to modders.
Thank you for acknowledging this when formulate in a non-offensive way.

And yeah, I have to agree, there is no point in having a grinding area in the main game.
I would go even so far to say there is no point for grinding areas in mods either, because you can have just fine combat heavy mods without respawn too and there should no decent supply of those from mods. So why have the same fights over and over when you can play new scenarios instead? We have the technology to rebuild our enemies, stronger, faster, smarter. ;-)