Will Linux Replace Windows?

So no, sorry, Linux will never replace Windows.

Is Linux really better than Windows?

Linux and Windows Performance Comparison

Linux has a reputation for being fast and smooth while Windows 10 is known to become slow and slow over time. Linux runs faster than Windows 8.1 and Windows 10 along with a modern desktop environment and qualities of the operating system while windows are slow on older hardware.

Is it worth moving from Windows to Linux?

For me it was definitely worth switching to Linux in 2017. Most big AAA games will not be ported to linux at release time, or ever. A number of them will run on wine some time after release. If you use your computer mostly for gaming and expect to play mostly AAA titles, it is not worth it.