It was def geared towards a younger audience. I made many a friend from Answers onto Messenger/email penpal, it was a great funnel from one Yahoo service to another - back in the heyday Yahoo really was a walled garden that "didn't" feel like a walled garden, many services to tie you in the ecosystem but it didn't feel as insidious as adtech/google is today.
If anything, it was a great learning curve and introduction to General computing as you still had to be somewhat technical - flickr, know how to edit photos, metadata, and more. Geocities, html, css, design photos, psd html templates, etc.
The User Experience was quite the limitation, and I'm sure looking back via rose tinted glasses makes it seem glamours, but it's really something concerning when you remove all friction and barriers and allow Everyone to participate.
On StackOverflow, people are generally nice, but ask a very newb question and not with a mentor and you'll have a bad experience. The other fun one was Expert Sex Change, - no wait, Experts-Exchange. The later was great for technical questions if you knew to scroll down past the paywall.
tl;dr it was good in the beginning, around 2010-11 yahoo answers really went down, alongside most of Yahoo but was probably because it was so successful.