1. As I already said, defragging is overrated, no major slow down of Windows will occur. The time and effort spent defragging will never be recovered by the miniscule performance improvement.I think some of your statements are wrong.
1. Defrag is very much required at times in Windows unless you want to live with loss of performance or you run from a SSD
2. Defender never finds anything. The other day I got 5 trojans and another 20 pieces of malware and Defender was completely ignorant of those. Mbam, SAS and BitDefender scanner found them. The malware came with the downloader of WinIso
3. The NSA deal is vicious and you should care about it.
4. Look on the Windows forums - half of the postings are about BSODs
5. The no reboot for Linux is a new function
6. You will worry about safety and security the day someone stole money from your credit card or used your system to spread malware.
2. I spent about 50-60 hours on the internet last week and downloaded dozens of programs. I got ZERO trojans or pieces of malware. I suggest you review your internet habits.
3. In what way is the NSA vicious? I have nothing to hide from the NSA and they don't care about me. Conspiracy theory? Paranoia?
4. I can't remember the last time I got a BSOD. In my job as a developer I work constantly with pre-Alpha software yet still don't encounter BSODs. Windows forums are not a good indicator of what problems I will encounter since most of the stuff that people post questions about is due to their own user error or general lack of Windows knowledge.
5. Glad to hear there's a new function called no reboot in Linux. BTW, not every little update in Windows requires a reboot.
6. I didn't say I don't do things to keep safe, I just said I don't worry about it because I'm not paranoid.