At first I saw ordinals a bit like soccer. I don't care, but I understood that people can appreciate this sport, and I try to ignore them although I see they want try to draw the attention of others. Similarly I don't talk to them about boxing because I know they equally don't care.

Now I discovered Runes with the high fees on the mainnet and if I had to explain it to a friend it would be: "so you bought bitcoins and now you have to wait to transact because... Some people like to speculate with these kind of... Art... No sorry drawings... Hum no sorry I meant sketches..."

By the way I spammed testnet twice because I thought it was fun to send a message never erased from the Blockchain, but at least it was on testnet and I didn't do it again.

So from my perspective there is no good explanation for ordinals. If I see something convincing I will update my node to support it. At the moment the only thing I can do if I am asked why fees are high is say there are stupid people wasting money. If I knew how fees would go, I would have invited people to use Liquid sooner, my only regret.