@Huginn, I’m not the person you replied to but I’ll weigh in.
The GW raid really feels like a daily chore more than anything, due in part to a few different factors. For one, it’s a co-op raid so you have to go through the hassle of finding a partner to trade with. You can skip this with auto-match obviously but then you’re cutting the amount of runs you can do.
The raid itself is pretty bland, probably because of how ridiculously easy it is and the fact that it’s basically just “Sit here and shoot the big guy for awhile until he dies”, which gets old really fast.
City Hall / Dojo are great because you feel like you’re actually playing the game and fighting enemies that can require some strategy. There’s no strategy at all for GW aside from “shoot this, then shoot that”. There’s no elemental push to focus on certain targets or really any decision making required at all.
Mostly though, it’s just that it’s been around for ages and you “have” to do 3-6 of them every day, which translates to just setting your phone down on auto-play for 15 minutes and try to remember to hit “accept invite” every once in awhile.