Why You No Longer Need Protection and Cleaning Software
In the 1990s, home computers became increasingly common—and with them came widespread fear of computer viruses. By the time Y2K rolled around, many believed viruses could cause massive disruption. For some individuals and businesses who failed to protect their systems, those fears became reality.
By the mid-2000s, most computer users relied on antivirus software and system “cleaners” or “optimizers.” At the time, these tools were useful. I remember running programs like CC Cleaner and noticing small performance improvements, while free antivirus tools like Avast provided a sense of security. Back then, it was hard to imagine using a computer without them.
The Shift to Built-In Protection
By 2015, with the widespread adoption of Windows 10, things began to change. Windows Defender evolved into a reliable, built-in form of malware protection.
Today, for most home users, it provides all the protection they need. This raises an important question: if built-in protection is enough, why are third-party antivirus programs still so heavily marketed?
From my experience servicing computers, the answer is simple—many users just aren’t aware that they’re no longer necessary.
When I worked on systems years ago, installing antivirus and optimization software was standard practice. Now, it’s just as common for me to remove those same programs and explain that they’re no longer needed.
As long as you’re using your computer responsibly, Windows Defender is more than sufficient for everyday protection.
Why Third-Party Antivirus Can Hurt Performance
If you’re running Windows 10 or Windows 11 and paying for third-party antivirus software, you’re likely making things worse for yourself.
These programs:
Add extra startup processes
Consume system resources
Disable Windows Defender, leaving the system vulnerable
In many cases, they offer no meaningful benefit over what Windows already provides.
What About PC Cleaners and Optimization Software?
These tools were once useful—but modern hardware has made them largely obsolete.
The main reason is the shift from traditional hard drives (HDDs) to solid-state drives (SSDs). SSDs are significantly faster and don’t benefit from the same types of optimization.
In fact, frequent “optimization” can do more harm than good. Many of these programs repeatedly rewrite data to reorganize files, which contributes to wear on SSDs over time.
Why Performance Tools Are No Longer Necessary
Modern SSDs are extremely fast:
HDD: ~75 MB/s read speed
Basic SSD: ~550 MB/s
NVMe SSD: 2,500–7,000 MB/s
Based on my experience, Windows runs smoothly with around 220 MB/s of available read speed. That means even entry-level SSDs far exceed what’s needed for everyday performance.
This is why older hard drives felt slow—and why optimization tools were once helpful. Today, that extra “optimization” simply isn’t needed.
So, Do You Need to Clean Your PC?
Occasionally—yes.
Running a cleanup every couple of years to remove junk files or duplicates is perfectly fine. But the days of running daily or weekly optimization software are over.
Just because a program claims your system is “slowed down” doesn’t mean it actually is.
If you want to clean up your system occasionally, I recommend the free version of Advance System Care by IObit. You can simply run the cleaner once and uninstall the program until you need it again.
Final Thoughts
Uninstall and unsubscribe from third-party antivirus software
Avoid unnecessary optimization tools (including disk defragment)
Rely on Windows Defender for protection
Only perform occasional cleanup when needed
Stick with the latest version of Windows (I can help you with this)
If you’re unsure about your system—or want help removing unnecessary software—I’m happy to take a look. Feel free to reach out.