Is Multiclassing "ruining" the game?

[krugaan]

3 levels of Warlock, 4 levels of Sorc.

Every short rest you get back 4 Sorcery Points. Which requires being a 20th level Sorcerer to do, and they only get it once per long rest anyway IIRC (I could be wrong, I don't plan on ever taking 20 levels of Sorcerer anyway.)

Yeah, well that's true, the level 20 sorc capstone is really sh!t. They really should have made better capstones to actually encourage straight single classing.

Multiclassing should always be "I want more options" and not "I want to be more powerful", and usually it kind of is, except in weird cases like sorc and lock. The fact that there is virtually *no* tradeoff is a pretty bad design flaw.