This is not as typical as some other polls you may see, but according to what Disney resorts you have been to, if you have been to any, vote for your favorite one and explain in the replies below why it is your favorite. Me: I like Disneyland, mainly because it was the first park I have ever gone to since I was a little kid and though I go there extremely often (once a year except for 2014), it really brings back childhood memories going there. I also like how old it is, considering it being the first Disney park opened in 1955 and the main street U.S.A looking exactly the same as when it was first opened. TL;DR: I like the old stuff.
Disneyland paris was the one I went to when I was younger and it bears a special place in my heart because there I noticed my love for rollercoasters which I still have.
I enjoy Disneyland and California Adventure as a package, just because between the two, there is so much to be done.