I've been to Disney World Orlando roughly 20x throughout my life, and I keep going back because I love it and I'm a loyal Disney World nerd.
However, I'm tempted to plan a trip out west to Disneyland in 2021... Is Disneyland worth it in comparison to what everything WDW offers? Can you do Disneyland Park and Disney California Adventure Park in two full days? I've heard some mixed reviews on Disneyland.. so all you Disneyland people.. please.. EXPLAIN WHY DISNEYLAND IS BETTER (or at least.. worth the visit)!!
California Adventure has I think the best Toy Story land, even better than the one as HS. They also have a bunch of other unique things, it's well worth a visit just for that.
Disneyland Park is just so classic, you get the classic Tiki Room, you get some other classic rides... and you have the same Galaxy's Edge that you can enjoy fully there as well.
I've been to Disney World a bunch as well, but I also really enjoy trips to Disneyland.
Not as useful to stay on-property at Disneyland though since so many other hotels are just as close. You can get a Magic Morning by getting a three day instead of a two day ticket, if you want to go a bit longer than two days...