Dealing with older coworkers who are annoying and have different styles of communication than myself?

I have many coworkers who are older than me, in their late 50s or early 60s. I have always found myself getting along really well with older people, in fact most of my coworkers really like me. But they are so ANNOYING. They are always smiling yet at the same time complaining about everything. They make stupid jokes that would not even make a 4 year old laugh but I have to pretend that they are funny. And they are usually extremely unmotivated so instead of actually working they'd rather talk and talk and talk all the fucking time.