Both bowling and cinema are activities that are essentially still done alone even when done as a group. One person bowls at a time per lane, and watching movie

Both bowling and cinema are activities that are essentially still done alone even when done as a group. One person bowls at a time per lane, and watching movies in a theatre is pretty much a silent solitary experience unless you're being a nuisance. If someone's late to go bowling we/I start bowling without them. When they show up, they wait and join in at the next game, or get their own lane. If someone doesn't make it to the cinema before the show starts, I'm watching the movie I wanted to see without them. It's their loss, not mine, and I'm not waiting for them or upset - I'm seeing the movie I wanted to see. It makes relatively little difference to me if they're present for those activities. It's the activity that I'm principally interested in. Sure it's more fun to bowl with others, but only marginally. The last film I went out of my way to see with a friend, afterwards I didn't even understand why I bothered when the experience was largely unchanged from seeing it alone yet I drove across town to watch it sitting next to someone I knew, useful that. Surely you could come up with better examples than those for when to justifiably be upset with a person being late... I'm not even one of those people who's chronically late, I just don't see it as an issue worth fussing over in the vast majority of social circumstances.