Anything great comes with hate but Touchwiz like every OS has its drawbacks. Some more than others depending on the person because everyone is different.
TBH I'm just grateful to have the outstanding technology we have today. I'm young and barely can remember the age of the VCR but I am still very grateful and appreciative. We are so spoiled today..to hear some people complain about waiting 0.5 seconds for a webpage to load,lol. I mean sheesh #FirstWorldProblems.
Touchwiz can be laggy with all the features it packs in but I rather have something that separates my device from others than not. IOS and Stock Android literally has nothing going on and are personally boring to me but some prefer the lightening speed!
This.

Sent From My Lighting Fast Galaxy Note 3 & Galaxy Note 8.0.