The Apple Computers have, unfortunately, lost that build quality and are now some of the most unreliable computers around
Sorry to hear about your experiences, but have to disagree with that statement.
It appears to be that either you are very unlucky, are potentially not telling us something about your treatment of the machines, or a mixture of both.
I own a number of macs and have never had any issues as serious as you describe, infact I've never had any issues requiring a service trip. And I push my macs very hard.... both in terms of exposing laptops to occasional accidental droppings and pushing the software/hardware of with strenuous exercises.
I also know a number of people of own macs and are very happy with them.
Fact is, bad things can happen to any manufacturer .... bad capacitors, dodgy drives ......
It's a risk of computing life that you have to put up with, and is the reason why things like backups are pushed as a necessity !
I suggest you perhaps write a letter to Mr Jobs in Cupertino if you feel so strongly. Document your experiences in a measured fashion and avoid outbursts about how you perceive Apple's QA to be
..... it might pay dividends (or if your streak of bad luck is set to continue, perhaps not !). Worth a go though, I reckon.