Till I retired a couple of months ago I provided technical support to about 300 Macs. They were a mix of iMacs and MacBook Pros. This was in a university setting with student labs, high end printing, animation, digital photography and electronically generated art, both 2D and 3D along with both professors and office system users.
The Mac were very easy to support both because they had very, very little hardware trouble and when troubles did arise with the hardware, Apple Care (the Apple extended warranty program) provided excellent support. Apple technical support has always been ranked #1 among all computers.
One big advantage is that if you do need support, it is just a phone call away and if you put your help request in via e-mail you can specify when you want them to call you. If you say immediate, your phone will ring within a minute or so. The longest I ever had to wait was about two minutes. AND a big advantage is the person on the other phone will be speaking American English and not some Indian dialect. Apple has their call centers in the country the call is made from, at least for the larger countries like the U.S.
Apple users also have a number of forums (they are called communities) available right on the Apple Web Site. The users provided a lot of very useful information to allow us to get very much more out of the machines usefulness than the users I supported even realized could be done.
The two main problems I had involved systems that just kept going and going and going. I had to justify replacing six and seven year old machines that were still running fine but the program suppliers created newer versions that we had to train the students on so they could be ready to enter the job market being familiar with the latest technology. These newer software versions sometimes would not run on the six or seven year old systems. Note that this same condition will also occur with PCs. I do know that the life of the Macs was considerably longer than the PCs used in other parts of the university. The other problem was that users did not realize that the Mac they had was capable of doing a whole lot more than what they realized. By training the instructors I could show them how to get a lot more of the features inherent in the Mac into the users regular routine usage.
One of the reasons Macs will continue to run is that they generally use a higher grade of hardware. Foe example, a manufacturer may make two or three different hard drives with the same basic specifications as regards storage size but the mechanical systems are designed so that a higher grade hard drive will have a much longer life under harder working conditions. The same holds for other hardware items.
If you go Mac be sure to check out the help files that show a PC user how to make an easy conversion to using Macs. There are also several open source (you can read that as FREE) programs that can be used on Macs and thereby let you get away without having to purchase programs to do the same thing. Open Office and Libre office provide virtually the same capabilities for free as Microsoft's Word, Excel and other programs for most users.
I do know that there would be absolutely no way I could have supported the same number of PCs as I did Macs. So yes, I would definitely say "Once you Go Mac, you will never go back!"