Not interested in what Asmongold has to say, sorry. And no, raids aren't usually better gear 'because of tier'. Are you high? Raids have always been better because YOU COULD NOT GET GEAR OUTSIDE OF RAIDS. Tier bonuses have nothing to do with any of it, it's all because of ilevel. If you just want a set bonus, you could always do LFR, it's never been meaningful.
Raids are STILL going to be run to get the best gear because you have to get titanforged drops of the highest quality of mythic + just to equal what you get for regular ass mythic raids. Yeah, there are trinkets especially that are good from non-raids, that's a problem with EN trinkets not with the gearing itself. Guess what, there have been good items that weren't from raids before, and if there WERE tier bonuses in EN - the trinkets would still not magically have improved. Nighthold has fantastic trinkets, for whatever it's worth.
"Tier" has literally nothing to do with anything. Anyone that raided despite not enjoying it before was doing it because of the gear, regardless of bonuses. Now they can do M+ and be content, if you want to raid then raid. If you don't do both M+ and raiding, Raiding will get you better gear than just running some mythics will. You need to run a LOT of Mythic +s to outgear what you're basically guaranteed to get in a few runs of EN.
EDIT: Just saw your edit, holy shit, do you like raiding? If so raid. It's absolutely not worse gear. It's like equal at worst, besides random pieces from time to time, as it has always been. If you just want gear, do whatever you want who cares, play the fucking game how you want, that's the point of these changes. The absolute optimal gear is always going to be for people who engage with more aspects of the game than just one, that's never changed.
http://us.battle.net/wow/en/character/senjin/Marzana/advanced
There, that's my Armory. Could my gear be better? Absolutely. Is it likely to be much bette runless I poopsock literally all day doing M12s? Not bloody likely. Guess how many of those items are from raids. I'm ALMOST positive every single one is. Raiding is the easiest way to gear up and will give you top end gear for your effort. It's also vastly more fun than M+|. What more do you want?