Depends on what you're using it for. If you mostly use your PC to browse the web or use web-based apps then Linux can handle that just fine. Microsoft Office, Adobe Suite, and other proprietary desktop apps are obviously not available, so you have to learn to use open-source alternatives for those. You might need to install some proprietary fonts to get text to render the same way as it would on Windows/MacOS. I've also had issues with getting speakers and microphone working the way I want them to, but I recently bought a new headset which seems to be working without issues.

If you're using a popular distro, such as an Ubuntu based one, then there is a pretty large community that will have threads discussing workarounds for just about every issue. Unlike Windows, changing settings doesn't involve going to a menu in the control panel or editing the registry but instead usually involves running short command line scripts in the terminal, which I actually kind of like.

Of course, if you're making a leap of faith using your primary PC, then I highly recommend making an image backup and having a Live/Recovery USB. That's what I did before setting up dual boot.