The good news if you've learned DOS is that it makes it a lot easier to learn Linux as you have already lived in the command line world.
And all the coolest geeks run Linux these days.
I started loading my old laptops with Linux years ago, but I'm not really a cool geek. The distros of at least the last 15 years (the time span that I first messed with Linux) are very visually similar to the Windows GUI and everything seems kinda dumbed down and automatically "easy," even for somebody like me who had never been on a Linux OS before. I never know how to do do something on Linux, but yet I'm almost always right on the first guess for where to find something.
I never got into the command line stuff and don't know any Linux commands. Never use the command line, tbh.
On the ease-of-use thing, that's as opposed to me trying my hand at Macs, which are reputed to be super-easy and marketed as such......"everything just works," Mac users would always tell me. Coming from a lifetime of Windows, I find Macs
un-intuitive and I struggle with them, particularly the filing system. In my experience, Linux is the OS that Macs are purported to be.
There used to be an OU fan here on the board named CrimsonGaloot who helped me get going with Linux, and taught me how to load it side-by-side with Windows and dual-boot if I chose. He's not around anymore, and I no longer have his email address, and that's a shame because he was a good guy and good tech support.