Is one better than the other (mac/pc) for me?

I'm really interested in art/design/photography, etc. I even use photoshop on my dell now and I think it's totally fine and works for me, but I hear that macs are more useful for my field of study. Why?

So if windows runs on macs, would i be able to use my windows photoshop software on the mac...?

Mac absolutely

iPhoto
Photoshop
Aperture http://www.apple.com/aperture/
or Adobe Lightroom http://livedocs.adobe.com/en_US/Lightroo...
Both Aperture and Light Room are applications for choosing and color correcting/tonal balances/adjustments of images straight from your camera - similar to what we used to do in the "dark room" with film negatives.

Firewire for direct camera to Mac transfer of hi res photos.

FAQs about Macs
http://www.usatoday.com/tech/columnist/e...
or here
http://ptech.allthingsd.com/20071115/her...

Leopard review
http://www.baltimoresun.com/technology/b...

There is a lot of great software for Macs including the software I have listed.

Macs run Windows too.

Both can do anything you need. Macs are easier to use when working with music, videos, etc. Creative/entertainment things. Macs, however, suck at everything else compared to PCs.

Mac OS does offer better protection against viruses and malware than Windows, but any decent internet security program paired with Windows can make up for that.

Though alot of Mac fanboys talk about how Mac OS is so much easier to use than Windows, they're both pretty easy. And despite what these people say, both get errors, not just Windows.

Upgrading is absolutely horrible for Macs. You have a very limited amount of options as to what and where you'll buy any components. PCs, on the other hand, can be build by the user himself, and have a large variety of upgrades available and at a generally cheaper price.

With PCs you get more for your money, hardware wise. Although the price of software might even it out, depending on how many apps you purchase.

Macs are better for people who mainly use them for media and general computer use (web surfing, homework, etc.) that don't expect to upgrade often. PCs are better for people who do anything else (gaming, programming, etc.) and want their computers to last for a long time by upgrading it whenever needed.

I hate Apple.