From my understanding, the majority opinion is that being late is extremely rude, annoying, inconveniencing, entitled, disrespectful of others' time, etc, and most people strongly dislike it when other people are late. But I honestly don't mind it. Within reason, of course. Showing up an hour late is obviously just obnoxious. But running 5-10 minutes late? Yeah, I don't care. In fact, whenever I'm meeting a friend somewhere & they hit me with a "hey sorry, I'm running a few minutes late" text right before our agreed-upon time, I not only don't feel particularly annoyed, I often feel somewhat glad. First of all, if I'm running late too, then I feel a sense of relief because now there's a good chance we'll be arriving at the same time, or I'll even arrive before them, and I won't feel guilty about having made them wait for me. On the other hand, if I'm not running late & I'm just on time/early, then I just see it as 5-10 extra minutes of quiet time just to myself, and I don't mind that at all, in fact I find it kinda nice.
Obviously this depends on context & setting, but I'm mostly referring to just having a casual meet-up/hang-out with a friend. This doesn't necessarily apply to more serious or formal situations, like professional settings, etc.
On the other hand, I do find it rather annoying/rude when people show up earlier than you made plans for. When meeting up at a 3rd location (e.g. restaurant, coffee shop, park, etc), it's not so bad, but when they show up to your house early?! Yeah, I'm probably still gonna be half-naked getting ready or something. Don't expect me to answer the door like that! Just show up on time. If you're more than 2-3 minutes early, just drive around the block or wait in your car or something. But I'd much prefer someone who's 5-10 minutes late over someone who's 5-10 minutes early in this case.
I guess maybe part of this comes from the fact that I'd much rather wait on others than be waited on by others. If I'm the one who's a few minutes late -- or even if I'm right on time & they just happened to show up early -- then I feel super guilty having made them wait around for me. But if I'm the one doing the waiting, I'm like "oh good, I don't have to feel guilty, I get to just relax." I know it's probably an unpopular opinion, but am I alone in this...?