I'm not a huge fan of blindly monitoring bounce rates because it can be a noisy signal BUT it can be very valuable if done properly.
1st - Don't worry about your general bounce rate. It combines too many different traffic sources and landing pages so it is too noisy for real actionable data.
2nd - Let's narrow it down to only visitors coming from Google serps because theoretically most visitors from Google should want to stay a nice long time and view multiple pages. Of course every industry/keyword/page will be different.
3rd - Now let's break it down by specific page. Remember I just said "most visitors" and I didn't say "all visitors". If you have an online calculator, a high bounce rate could be a sign of high customer satisfaction so we want to remove those false positives. If you are a content website you want to look for articles that have a high bounce rate. A high bounce rate does not guarantee a problem page but evergreen content pages with high bounce rates are much more likely to be a problem page and worth a manual review.
You want to qualify the bounce rate results. We all think our own websites are perfect but that is our ego blinding us from reality. Looking at usage data like bounce rate from Google serps helps us to spot potential trouble pages that need to be reworked to improve its value and usability.
I am not saying Google uses bounce rate but imagine if you are Google. If someone searches for an article about widgets and they click on a website A and 90% of the time they immediately return to the serps and click on website B which they don't return to the serps. If you were Google would you start thinking that website A should be demoted and website B rewarded? Even if Google is completely ignoring bounce rate, wouldn't you want to protect your brand image by trying to identify and improve your trouble pages? Protecting your brand image will make it easier to find partners for linking and cross promotions.
How do you monitor bounce rate?
What is your bounce rate from Google serps?