"It has taken me quite a few years to realize the fact that most of the thoughts in my head are not necessary."

Much of life is unnecessary. I doubt if many people would reject watching all sport on the grounds it is unnecessary. Very little theatre or art or film serves a necessary purpose. Your typical Hollywood blockbuster is impressively unnecessary.

None of which says we shouldn't do/make them.

Some people find discussions of this kind interesting and informative; I certainly find them more entertaining than sport myself. If you dislike this conversation I doubt if you would have enjoyed the discussion I had (via messenger) over breakfast on Saturday morning on whether the ancient Greeks had a concept of intelligence similar to ours, or was their concept of disposition of mental abilities significantly different? That is a fairly typical breakfast topic in my household; I understand not everyone starts their day like that, but if you don't it seems unreasonable to object to those who like to do so.

I let your earlier comment pass, Ed T, about this discussion being for a handful of people talking amongst themselves on an obscure music website. All I can say is what's wrong with that? In other circumstances Steve and Lighter and Donuel and others might have this conversation sitting round a pub table; why shouldn't we have it here rather than there? It is, after all, the only place we are likely to meet. (Arguably it is better here as at least we don't annoy the people on an adjacent table!)