There never was a reason to format a disk in Windows unless for re-installing the OS or another OS. Defragmentation yes but that was inside Windows. Regarding the comment: people tended to format to get rid of malware in Windows but (to me) that is similar to blowing up the house to kill 1 mosquito. In general malware can be removed without a format but it was ofcourse the easiest method. We in general do not have malware (or it is installed deliberately by the user).

There is not really a need to format a disk on a regular base; when you re-install you can format but even then you can install the same OS without formatting. As long as you system does not go over 95% full there is also no reason to defrag the disk. If you do reach 95% defragging is just a band-aid; you probably need a larger hard disk.

So no.