Its actually a personal choice, it has some features and stuff that suits somebody, and for some it just has too many unnecessary features and complications, its basically a messaging app just like the default android one, its just an additional app which gives a tweaked, themed and highly customizable messaging alternative.
You should try it for yourself and see how it is.
When i first used it, i liked it for some really good notification features and prompts, but i dropped it later because it was taking too much space and ram.
