TL; DR: Estimates Are Useful, Just Ditch the Numbers
Many people dislike estimating work items as estimates supposedly open the path to the misuse of velocity by the managers, reintroducing Taylorism, micro-management, and excessive reporting through the backdoor. To them, for example, the proponents of #noestimates, estimates conflict with basic ideas of agile product development such as self-management, becoming outcome-focused, or leaving the feature factory for good.
I like to suggest a different, less ideological approach: estimates are useful at the team level, just ditch the numbers. How so? Estimation of work items is a fast way for a Scrum team to figure out whether all team members are on the same page regarding the why, the what, and the how of the upcoming work. The numbers are a mere side-effect, probably still valid to inform the team, though. (Indeed, the numbers are not intended to be used beyond the team level.)
By the way, similar to the fact that you cannot “not communicate,” I am convinced that people will always “estimate,” whether they talk about it or not.
