For my part on this, I used to be a die-hard, militant Legends only fanatic. I refused to acknowledge the canon wipe, and I didn't want anything at all to do with anything Disney did with Star Wars.
The new canon surprised me, and I can honestly say I like it much better than the old EU. When I calmed down and looked at it rationally, the old EU- particularly in the Imperial-era and forward- was an absolute mess. Yes, we have a lot of fan-favorites, like Thrawn or Mara Jade, but a lot of it was a mash of all these different writers each wanting to put their own thing into Star Wars. That can't work, and it didn't work.
Now, we have the Lucasfilm Story Group. We've got Leland Chee, Dave Filoni, Pablo Hidalgo, et. al., all keeping things within a framework to keep it from becoming the mess that the old EU was. They're all Star Wars fans like us, and I think they're doing a great job with it.
Personally, my stance on it when it comes to my personal roleplaying is what a lot of people seem to have said already. Hard canon comes first, and Legends fills in the gaps. Also, I really like Forks' idea of role playing some of the Legends as literal legends. I think that could be really fun.
Also, to be clear, I'm not gonna bash on anybody for using Legends. We're all here to have fun, and that's totally cool. I still love a lot of Legends material, and I use it in my Edge of the Empire games pretty often.
I just really like Star Wars, you guys, and I'm pretty sure you all do too, so let's all be cool.