Windows 10 is having alot of issues whether we talk about security or other issues, Many of the people shifted towards linux and other Operating systems which could give better security and privacy.
I have also been using windows 10 and the biggest problem i got using it was consumptions which were taken by this Operating system like consuming 60-70% Ram,cpu on Back ground services which were providing nothing important.
I have been reporting bugs which i caught in news about security issues which are present in Windows 10 and now this one which could have hard impact on your SSD drive.
So basically by defragmenting we can make frequently used applications closer to ourself which could be accessed more faster than those who are not.
Its recommend to atleast provide fragmentation once per month to make your pc a bit faster.
here is the intro i got from Wikipedia
defragmentation is a process that reduces the degree of fragmentation. It does this by physically organizing the contents of the mass storage device used to store files into the smallest number of contiguous regions (fragments, extents). It also attempts to create larger regions of free space using compaction to impede the return of fragmentation. Some defragmentation utilities try to keep smaller files within a single directory together, as they are often accessed in sequence
refference
it was said that windows 10 optimization tool was having a bug which was auto defragmenting windows frequently causing a huge pain for not only batteries of laptops.
Due to the problem in Optimization tool windows 10 is not having history of last Defragmentation which is causing windows to further defragmenting frequently which could cause mess in your hard drives. When the data is Defragmented the data is organized in a manner which help to access files more quicker as i said above but SSD which is already faster doesn't require frequent Defragmentation so its unnecessary to perform Defragmentation again and again .
btw if you have any query and know something more about it kindly leave the comment so i could learn more about it and also for future i could seek more information . Waiting for your comments :)
Moreover i would like to say Thanks to the owner of Project Hope 
So what are the things You need to promise by yourself is
so which topics you can right on are Blockchain technology, AI, cybersecurity, robotics, VR, economy, business, marketing, psychology ect.
As i have given proper reference i can say this :)
In love with Project Hope
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