I relatively often click on ads for new electronic musical instruments, even though I rarely buy them. These are just interesting things to see, some actually novel.
I sometimes click on ads about things related to IT and programming, if they mention something novel and important, just to be aware of the landscape, and what potential competition are pushing.
I see ads relatively rarely though, because I run uBlock Origin. So the ads I see are usually placed in context with some care, not just randomly tucked on to an unrelated webpage. Most of the ads are really poor, as I can see if I use an unprotected browser.
