Windows 7 and chess software

I had a very old PC, running XP, no problems, except it was slow.

Now I bought a new PC, lots of memory, dual core, all the bells and whistles, with windows 7.

After a month, I'm seriously reconsidering running in XP again.

I've had to uninstall and reinstall my DVD drive several times, Windoes 7 just stops seeing it.

My nokia PC suite picked up my phone for a week, then it stopped. Uninstalling and reinstalling does not help. I had to fish out an old Samsung so I connect on the net.

My desktop icons scatter all over the screen every few days for no reason

The icons on the quick launch bar changes to the unknown file type icon every few days.

When I run some programes (esp chess engines) the program works perfectly, but suddenly exits and I get a message the program stopped responding.

It suddnly decides it's not happy with the email client I'm using, and changes the default to something else, taking my address book and messages with it.

So, the question is, why do people laugh at me if I want to install XP again?