Some campaigns/dms just don't facilitate short rests.. Personally, warlock feels almost unplayable if you don't have some other way to sneak spells in.
I give Short Rests in appropriate areas.
Characters can benefit from 3-4 Short Rests depending on the difficulty I am going for.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.