Learning Klingon sounds like it'd be super fun, but it is kind of impossible in practice. One of the most critical parts of learning a language is conversing with native speakers. Unless there is a child who was raised in impossibly rare circumstances, there are no native speakers of Klingon. In 2009, it was predicted that there would probably be 20-30 fluent speakers worldwide, and since then, the number has nearly doubled to 50-60 Klingon speakers. It must be a lonely life with all that knowledge and so few people to talk to. I hope those 50-60 souls at least have a groupchat where they can feel superior to all of us rubes.
Back to the child raised in impossibly rare circumstances, I do think it would be cool to raise a kid with only Klingon spoken around him for the first 3-5 years of his life. If you would do that if you had the chance, you might be the target audience for these Star Trek memes.