
You can "fiddle with the workings" of a Mac if you want to. Keep in mind it is based on UNIX. You can launch the terminal and other tools and do all kinds of funky dangerous things. I've done this MANY times. I set up a web server for running Ruby on Rails using the terminal and some other wacky thing in the utilities application folder that is very frightening and involves typing in "funky code".

I have never had any trouble with setting up a network on my mac. I have 3 macs on the network with one PC. When I first got the main Mac I use for production right now, it had OS 9. I updated to OS X and the network... was "plug and play". It only took me a few minutes. Of course I'm using a router so that made it very easy.
I have an OS X mac and an OS 9 mac and OS 8.5 mac on the same network. Works like a charm. My PC is sort of like my file server at the moment. It has a way bigger hard drive. I do have an external FW drive hooked to the mac with about 250gb. I can access any and all computers from any computer on the network.
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Software availability? Well... some day I will buy a new Intel Mac. When I do I will install one of those "dual boot" thingies to run windows on my mac. However, so far there really isn't anything on the PC I can't get for the Mac. I use a lot of open source programs and they run on mac of pc and are IDENTICAL in every way. I have the same applications on both computers.
There also fantastic programs for the Mac YOU CAN'T GET FOR PC AT ALL!!! Yet no one complains about that. Programs that have no PC or windows equivalent. There's a fantastic text editor called Textmate that many PC users keep begging to be ported to Windows but the developer refuses because he loves Mac.

Don't get me started on "price". I'm sorry. You get what you pay for. Macs come with much more out of the box than a PC does. You get iLife, iOffice or whatever it's called... with page layout, word processing, spreadsheets, production tools to get started right away. Windows does not come with OFFICE. You have to buy those tools. Mac comes with iMovie and iDVD. Those programs kick arse baby. Garage Band... wicked cool.
Yes there is a bit of a "style" aspect to the price of a mac. I still have my first mac. It's just 20 years old this year. I bought it in '89... it still works. Not kidding. A 20 year old computer still works as if I bought it yesterday. Macs are SOLID. They just last for freaking ever. The problem with PC's is that so many different companies make them that there is no "standard" of quality. With Mac they are all built with the same standard.
Don't start with the stories of exploding batteries and broken Macs... come on... those things happen to EVERY technology company and can't be used to paint all Apple products with one brush. All companies that make computers have blown it and screwed customers. All of them. No one is innocent. So bringing up those times when Apple failed is fine and dandy, just make sure you mention every other computer company and MS that made similar mistakes as well.
When you buy a Mac you are good to go right out of the box. You can start immediately doing ANYTHING you want. With a PC you WILL have to buy a few things to get started. The price issue is a wash in my opinion.
And don't forget the cost of support over time. It's well known that Macs in general have low cost for maintenance over the life of the computer than a PC. One of my neighbors have gone through THREE freaking PCs in TWO YEARS due to viruses. Seriously. I've been over their 3 or 4 times trying to fix their machine. They bought new computers because they just didn't know what else to do. I kept telling them to just reformat the drive and start over but they just felt it was simpler and somehow cheaper to buy a new PC. There's your price difference. Virus protection and maintenance.
A few years back there was another neighbor with the same problem. Hit by viruses. They bought a new computer. One of my Uncles... same story. Viruses... bought a new computer. I'm not saying that is the CORRECT thing to do but sometimes people are desperate.
-vern