Security in computers are there forever

No matter how tight the security of software is, vulnerabilities will be found to be exploited. Because the software is made by humans and humans make mistake, something will always be left to be exploited. It just takes enough will and dedication.

So sometimes I think the reason why Windows had more viruses than like Macs or how IE had more problems than Firefox other than shitty coding is because every hacker finds its a prime target because everyone uses it.

If lets say everyone used Linux and Firefox, I am pretty sure there might loads of virus and exploits occuring on them too (though Im sure not as much as Microsft's products).

Having to change to root to do anything is annoying for the "average user" - which is why OSes designed for the average user automatically call sudo if an app needs system access. All the user has to do is type in his password (his user pass, not even the root pass) and go about his business. Hardly inconvenient.

Before you argue with this, consider that this is the approach taken by OS X, the UNIX that comes from that company which is well known for its focus on usability.

Remind me again why we must sacrifice security for usability?