Opinions are like arseholes

Everyone has one, and most of them stink.

This saying has been around for some time, and for good reason.

It is very easy to have a lot of opinions.

It is difficult to only have opinions about things you truly know something about.

It requires you to take an honest look at yourself and ask the question: What do I really know about this subject?

The upside is that you will start to stink less and smell nicer.