When I was young I didn't want to give them because I thought they had to be accurate, and pined over being wrong, wasting hours trying to ensure I covered all my bases and basically doing the work to get there. I was quite good with accuracy, which helped feed my belief, but the effort to be accurate was monumental.
Thankfully, I eventually came to realize that you can choose a random number. Nobody gives it another thought after you've answered.
I think it's literally what the word estimate means though. There's a reason people use the word estimate and not prediction. They want to know whether it's going to take 3 days, 3 months or 3 years.
Yes, but what wasn't clear was around the margin of error. I assumed there was an expectation of being close. If I said eight hours and it took nine, close enough. But if I said eight hours and it took a year, that was once concerning, but I eventually learned that I could say eight hours for a year's worth of work and nobody would actually reflect back on it anyway. All that mattered was answering the question with something.
Thankfully, I eventually came to realize that you can choose a random number. Nobody gives it another thought after you've answered.