There are some rude and unfriendly people on some repeaters, no doubt. That's why I work simplex for the most part. Get a decent outdoor antenna (3-5/8 works best for omni) up at 40 or 50 feet, some LMR-400, a decent dual band mobile, and forget about repeaters as I have for the most part. My ham friends either use 2 meter simplex or HF for the most part. The only repeaters I usually use are 10 meter repeaters. I have about as much use for 2 meter and 70 cm repeaters as I do a broken toe. Not disparaging those who like them, just saying that I don't care for them, and it has a lot to do with the rude (stick up their rear) types who like to hang out on (some of) them, in part to take shots at others who they don't feel are "worthy". On one repeater in town, all hams are expected to ID every time the key up, even if they are talking back and forth with one person. Ridiculous.
Another good reason to work simplex and use HF is this: Repeaters are primarily supposed to be used for situations where simplex contact with a station(s) isn't possible, or to call another station to a simplex frequency. I do not understand people who could work simplex with their friend(s), but instead use repeaters.
The better set up you are for simplex, the less you have to deal with repeaters, and the nonsense that sometimes comes with their use. And to be clear, I am not saying that all repeaters or repeater users are bad, because many aren't. There are however, enough bad apples to leave a bad taste in the mouth of some hams.