It's no surprise that Rick hates Jerry in the Adult Swim hit series Rick and Morty, and there are a few good reasons why. Jerry is married to Rick's daughter and is the embodiment of everything that Rick dislikes in people. The only thing that seems to connect the characters is their respective relationships with Morty. There is even internal resentment that Rick harbors for Jerry and is projecting some of his own failures onto him.
The animated comedy series Rick and Morty is a sci-fi parody that combines dark and surreal humor with an improvisational tone. The show was mean to his sidekick Morty. Meanwhile, Jerry is the long-suffering patriarch of Smith household, who struggles to maintain his relationship with Rick's daughter Beth and his children Morty and Summer. Constantly undermined and mocked, Jerry is a regular punch-bag for Rick throughout the series.
There are various reasons for Rick to dislike, or even hate Jerry. The first and most obvious is how unremarkable Jerry is. Dan Harmon has created the archetypal "nice guy" who appears good but is actually a selfish, negative, leech. The second is the fact he's married to his daughter, which could be enough on its own. A third reason is the necessity of Beth and Jerry's relationship for Rick's own purposes. Rick hates necessity, even time travel, detecting anything that puts him outside of his comfort zone. He's a master of his environment, and the necessity of Jerry in the dynamic of his family has harbored some serious resentment.
As far as Rick's concerned, Jerry is completely inadequate as a partner for his daughter Beth. Jerry is ive and unremarkable, pretty much everything that Rick isn't. This is likely the reason for Beth's attraction to him - she has abandonment issues and Jerry is least likely to do the same as he is so unlike her father. There can already be unwarranted dislike with in-laws, but this extra layer of guilt in the form of Jerry is easily the biggest factor in Rick's hatred for him. Jerry is a living reminder of Rick's inadequacy as a father that he is actively trying to repair.
Morty is required in order to hide Rick's exceptional brainwaves from others with "Morty waves" and this implied insult helps to define the toxic relationship between Rick and Morty. As a result, the Citadel of Ricks actively pairs Beths and Jerrys from other dimensions in order to increase the production of Mortys. Rick C-137 is the most "Rick" of all the Ricks and detests the Citidel, leading to greater resentment towards Jerry as he's more or less a product of the Citadel. Both the Citadel and Jerry are unwanted necessities in his life, and the fact they're connected heightens his loathing for both.
In his own mind, Rick shouldn't have to do anything he doesn't want to, because he can basically do anything. This core belief does create some questions, like why Rick doesn't find an alternate wife. Anything that gets in his way in Rick and Morty he can usually solve or eliminate - but his emotional connection to his daughter creates these unwanted compromises to his lifestyle. Jerry is a living monument to his failures and is almost a physical representation of the vulnerability brought on by being emotionally invested in someone. For that Rick hates Jerry, and it's no wonder.