Coming from Verizon HTC One (m7) topic

Alright, So I'm a big fan of Good Overall Cameras, Good sounding Speakers(mainly Boom Sound but maybe nexus 6 too), and just a good overall (not laggy) experience. I have an S4 as a work phone, and for most things I like it, but I hate how the UI just seems to hiccup for no apparent reason and then work fine after that. My question is, is there a "need" to root this phone for performance issues/ fixing lazy coding? Or do people simply want root for customization? I say this because I know being part of the root community, we're always wanting to jump to the next best thing (aka, kernel, overclock, the 1000's of kernel features) etc. Do you hate having a Samsung device but like it at the same time? Have you ever wished you'd gotten a Nexus 6 instead? I'm honestly just growing tired of the poor camera performance of HTC and I've been very disappointed, but love the speakers. Help?