Keeping your PC clean would ensure you a smooth operation and getting your job done without additional stress and hassle. As these days there are a lot of spyware and malware dangers on the internet, you cannot be sure that you won’t get infected with who knows what, before even having the chance to realize it. When you notice, it is usually too late, as your computer is already sluggish.
If you want to keep your PC clean you can either opt for a free solution (which, in my experience, are not very efficient in removing all unwanted programs from my system), or you could go for some low cost solutions, like PC Concierge Services from PCCleanMachine.com, which will help you remove malicious programs and speed up your computer.
Of course you could live very well without such solutions, but you need to be aware that in that case you have to be a really organized kind of person, because you’ll have to reinstall everything on your computer, including the operating system, every 2-3 months, or even more often.
This is not impossible, if you keep your important files on a partition separate from the operating system. In this case, your files are safe, and you’ll find them in place after reinstalling. However, it is good to have backups every time you add something to your collection, because you never know when your hard disk crashes, causing you important losses.