Your citations include a single internist who has no scientific research to back up his claims and is widely regarded as a quack and a website which stuck "As seen on CNN" on it's home page, both of which are trying to sell weight loss solutions. Then you have an opinion piece by a computer programmer. A very clever computer programmer, but none the less someone with absolutely zero qualifications in the area they are asserting. Again, I know it's popular to claim that with willpower everything could be solved, because then we don't actually have to fix anything.
As to your comments on women, you're cherry picking statistics and reading articles which also do so. In addition to Dutch women(who do work by the way, just not on average full time) being happier than American women, so are women in most of the rest of Europe including countries where women often do work full time even after being married or having kids, and for that matter a whole mess of countries where women don't work. The men in these countries are often happier(though the correlation isn't quite as clear) as well. This includes a whole mess of former Soviet Block countries which would appear to be barely functioning. These countries have a social safety net supporting women and families where the US most definitively does not. Oddly enough from what I remember the UK, despite having something of a safety net, is actually more generally miserable than the rest of Europe both among men and women, read into that what you will.
In terms of the 60's vs today. No one said freedom made you happy, but that doesn't necessarily make it a bad thing. On top of that women in the early 60's were expected to be happy with their lives whether they were or not and the people conducting the survey also expected and wanted them to be happy in their lives, take the results with a grain of salt.
I'm not suggesting we be inactive, I'm suggesting that pretending that if we just regulate something or if people would just try harder the problem will go away is idiotic and unhelpful action. Your evidence for there even being a "pleasure trap" let alone one that is easily "wrestled with" or "escaped" is thin at best. It's virtually impossible to effectively regulate food because all the things that you're trying to regulate are also things that people need to live, you can't just ban sugar, fat, and salt, so you need to somehow regulate the level of consumption of those things, which is impossible without some seriously draconian legislation.