I used to actually look for the 3.8l gm cars with issues reguarding the plastic plenum and plenum gaskets, can do the replacement plenum in 40 minutes (including beer breaks...)
It's amazing that a little research could have saved you such hatred for the poor Subaru. I am not sure where the others got the 100k of use post? Did i miss something? I am curious how long you had the vehicle and what expenses other than the HG you experienced. But 80k is in the first 100k, and i understand having to do the head gasket so soon would be an annoyance, but had you research and followed "buyer beware" you could have saved from the headache, or been prepared for it. Plenty of Subaru's have come and gone in my family, and we in particular have had great experiences. My sisters may have even saved her life.
Comes down to anything can happen to any make and model. My dad drives a 07 Tacoma, 40k miles, and it had a head gasket go, luckily under warranty, but that didn't shy him away from driving a toyota.
Also have a 02 Pathfinder in the Family, 65k miles trans started slipping, out of warranty had to fork out $2k. Still a great vehicle and would buy another. As I said in a previous post, Every make and model someone know someone that had a bad experience with any vehicle you mention. Go to any other vehicle forum and you will find the same posts blaming the manufacture, blaming the service center, blaming god, blaming the Teenage Mutant Ninja Turtles.... Fact and point "S*** Happens." Educate yourself on the smell first so your not surprised.