Some of us had to learn the hard way, I guess.
I didn't really appreciate how much mez was in the game until I had about 3 level capped alts.
My first alt was a Katana/Regen scrapper. I got Integration, and never had to worry about mez again.
Second was a Warshade who got to mid-30's and stalled. Lobster mode meant that mez was a minor issue.
Third was a Fire/FF controller. Dispersion Bubble meant I only worried about sleep.
Then a Bots/Traps MM. FFG meant again, sleep was the major threat.
Then SS/Invuln Brute. No further comment.
Then Ice/Ice Tank. Could hold aggro like nobody's business. Didn't get mezzed.
Then, when I finally I finished off the Warshade, while messing around trying to relearn how they worked including human form, I realised that mez was a significant issue.
However, my alt creation meant that mez didn't really bother me for a long long time.
Which meant that when it finally *did* bother me, by god was it a rude awakening.
I used to wonder why the blasters, defenders and so forth being played by friends were having issues while I was blithely wading around, neck deep in mobs.
I was an idiot