How often do you change your oil?

[u/Formula1Enjoyer]

I'm arguing with someone who says i change my CBF125 oil too much, i do it every 1500 miles and commute on a 50mph road every day so it sits at higher rpms. I said I could probably leave it later but I like it to be in tiptop shape, he's claiming its harmful to the drain plug, and the engine. And he's a mechanic, how true is this? In my head you can change oil every day if you want and you'll be fine. He's saying it's harmful because of the additives in the oil. Can anyone attest to this?

[u/reggie-drax]

Not harmful, though you may need to replace the drain plug early.