Again people ate missing the point.
CR isn't meaningless. CR tells you who has a chance of one-shotting a PC and who has good chance of seriously hurting a PC or draining their resources somehow.
A CR 21 solar might be easy to kill but it can one-shot you party's level 20 wizard on turn 1. Fight start. Slaying Longbow. Wizard SoD.
A CR 5 drow elite can also slice up your party wizard. Sure it's easy to kill but it can carve your mage or rogue in 3 easy if you don't kill them fast.
A CR 13 vampire may be easy to KO but it drains maximum HP on a bite. This can be very bad if not the lest fight of the day.
CR is mostly a "If it hits, can it wreck you" meter. If CR > Level, it can wreck you on hit. CR < Level, it won't wreck you on hit.
CR isn't meaningless. CR tells you who has a chance of one-shotting a PC and who has good chance of seriously hurting a PC or draining their resources somehow.
A CR 21 solar might be easy to kill but it can one-shot you party's level 20 wizard on turn 1. Fight start. Slaying Longbow. Wizard SoD.
A CR 5 drow elite can also slice up your party wizard. Sure it's easy to kill but it can carve your mage or rogue in 3 easy if you don't kill them fast.
A CR 13 vampire may be easy to KO but it drains maximum HP on a bite. This can be very bad if not the lest fight of the day.
CR is mostly a "If it hits, can it wreck you" meter. If CR > Level, it can wreck you on hit. CR < Level, it won't wreck you on hit.