Treasure Planet will always have my heart here. It's the Disney movie that makes the most emotional, as part of it deals with parental figures.
Treasure Planet spoilers for those who haven't watched it~
More specifically, Jim's father abandoning the family and leaving his mom to take care of her son. We can kinda assume that it takes a toll on her eventually, and while we don't see it much, we can feel how that mother/son dynamic is strained. He's rebellious, and he nearly gets arrested at the beginning of the movie! Through some events out of his control, the inn where he and his mother live in and work at gets burned down.
He feels like a failure, and once a map to the fabled Treasure Planet appears (a planet in a story his mother read with him when he was younger!) he sees it as a chance to finally prove himself to her and make her proud. Flash forward and he bonds with a crewmate who acts as his father figure, only to have that relationship betray him. Of course, with it being a Disney movie, Silver turns back around and becomes good again, but still! It was a heavy blow.
Especially after that montage and that heartbreaking scene in it.
My dad stuck with me, but my mom left the family when I was 5 and I remember crying a bunch then and having the occasional nightmare about it. My situation's different, but I knew exactly how he felt in that moment.
If you flip the parental roles around, with the birth mother leaving instead, the distant father, and Jim getting a mother figure, well.. that's pretty close to my family situation. It's why the movie resonates with me so much. I don't cry at movies like at all, but this movie catches me off-guard sometimes and gets me teary-eyed so.. close enough lol
I just realized I'm talking about a Disney movie and not a Pixar movie, but.. I wrote a good comment, and I don't wanna delete what I wrote, so I'm recommending it now lol
Ok, so how about Pixar then???
I'd have to say.. Ratatouille and maybe WALL-E are the closest ones to making me cry, like on a scale of 1 to 10, these are a.. 6? (I know, I'm a monster for not crying at the first 8 minutes of Up! I'm sorry!) Ratatouille has this attitude of "anyone can do it!" and again.. that resonates with me, considering my upbringing.
WALL-E has this lonely feel to it for quite a bit of the movie, and this scene..
..speaks volumes about how he's not just a robot. He's got feelings too. He constantly watches a couple dance while he's the last of his kind on a deserted planet. He just wants to have a connection with someone. I mean, same, dude.