Is anyone else getting a little impatient with the annoying strain on the friendship between Sheldon and Leonard?

I agree. I mean, I love when they act like family, any of the characters, and any sort of family. I like when Penny acts like Sheldon’s mom (1.11 3.07, 3.20, 4.01, 4.12) When Leonard acts like Sheldon’s dad (3.07, 3.20, 4.07), when Sheldon acts like Penny’s dad/brother (3.08) and all, but I get why some don't, and not to mention that’s a little off topic; I love the Leonard/Sheldon friendship, it’s my favoriete friendship in the show, and I don’t like when it’s strained. And they’re both at fault. In the last episode, Leonard was a little too “I want it my way” which doesn’t help Sheldon’s matter any, however while Season One Sheldon could be rude, condescending, of mean without realizing he’s doing it, one can’t argue that Sheldon has grown up any without acknowledging that he is at least somewhat aware he’s doing it now. And playing the theremin while they were trying to work was just spiteful. That’s why Sheldon’s relationships with Penny and Amy and Beverly work, they’re based on respect. However, in Amy and Beverly’s case, he respects them because they are scientists; in Penny’s he respects her because she has his number and can deal with him just like his mother can. He doesn’t respect Leonard, Howard, of Raj, because he feels like they are beneath him and they don’t have the skills at controlling him like Penny of Mary do.
They’re still my favoriete friendship on the toon though, because when they do get along I find their friendship truer than really any other possible combination on TBBT. And the fact that Leonard zei “we’re still roommates; we’re still friends,” in the last episode showed that he can be fighting with Sheldon but still care enough about him to be able to acknowledge him as his friend even in the aftermath of an argument.

I agree that there has been a lack of friendship shown between Sheldon and Leonard lately. A lot of episodes have just been them fighting and Sheldon acting meer like Leonard's child than friend. It's funny sometimes, but it's also kind of annoying that all they do is argue.

U bet. Sheldon acts so bratty! So bratty that those dudes act like they're the parents. He's mean...he just needs time 2 grow up