Logos, like many things, have their fads and trends.
What looked modern and cool in the 1950’s looks old-fashioned and stilted now.
So logos tend to evolve over time. Some great examples:
Is your logo out-of-date? Take a look at it with “new eyes” as though you’d never seen it before.
What kind of impression do you get of the company whose logo that is? If it isn’t appropriate, it’s time to take action.