I posted this same words on avast's facebook page yesterday, nobody answered except the page admin. This proves:
a) Most people out there already uses avast. As I worked as a technician myself for about 4 years, it's very hard to find people interested on helping a friend with this kind of situation, "if it ain't broke, don't fix it", very hard to find somebody that would uninstall/install again if all is going fine with their PC's.
b) People are afraid to do so.
c) Along with theory A, some average users could use other antivirus solution. Again, "if it ain't broke, don't fix it".
I gotta tell I tried, but it seems impossible. I really like avast, on my tests it even did better than some paid solutions. Problem is, buying it right now seems kind of pointless. In fact, buying any solution seems pointless since (according to my tests) it's free protection handles most 0-day plague very well. Another point is that I only use Windows to play my Steam/Origin games, all my work is done on Linux (I bought Kaspersky for 2 years). Not to mention my facebook friends list has less than 100 people (only close and relatives). I guess I'll just have to be happy with the free one =P
Anyway, great product, totally recommended.