One of the frustrating things about UFO reports is that you can't actually say that it's usually a plane.
I guess that's true, but I'm generally speaking from my own experiences with some people who have definitely seen a plane of some sort. Near to Speke airport here in Liverpool, you tend to see all manner of planes flying overhead, and I knew one fella who quite often spotted UFOs in Speke.
I feel planes are a more obvious explanation for UFOs, but they don't account for all sightings, but I do believe all sightings have their logical explanations.
As a kid, me and a few mates had a UFO-spotting club, you can imagine we saw them quite frequently! I think that goes for many people who intentionally set out to find UFOs, or ghosts, or Bigfoot, Nessie, etc, you start seeing the buggers everywhere.
I remember working with one ex-fireman, quite an intelligent chap, but he had a thing for ghosts, as did I, I just didn't believe in them, whereas he did. He had one of those ghost apps that lots of people had in 2010, around then. He'd matter-of-factly walk up to me during shifts and would show me his app, telling me to have a wander round a certain abandoned warehouse on my break as he'd had some good readings! Needless to say I asked if I could have a wander there during my shift, as opposed to my break, and he obliged. I'd sit in the old warehouse just eating a chocolate bar and generally doing bugger-all for 30 minutes.