Why do you hear popping when you listen to vinyls?

Dust? I love that sound.

Because it's a very crappy format.

Idk, probably the irregularities in the ridges? Vynils can get damaged after a while and even skip lanes (or however they're caller the song ridges)

Various reasons. In cheaper pressings of older albums sometimes the pop actually comes from pieces of label paper melted into recycled vinyl.

if it happens at 2 second intervals probably a scratch:

Static i guess.. maybe dust on the ridges? Idk

Scratch on vinyl itself or dusty stylus?

the speakers need dusting,

Not as much as when I was a kid.