Animals' taste systems are specialized for the niche they occupy in the environment. That includes us. As hunters and foragers of the dry savannah, our earliest forebears evolved a taste for important but scarce nutrients: salt and high-energy fats and sugars. That, in a nutshell, explains the widespread popularity of junk food.
When I was 16, I had a job on the cleaning crew at a local hospital. I wore a pink uniform and cleaned bathrooms and buffed the hallway linoleum. Oddly, I don't recall hating the job. I recall getting choked up at the end of the summer when I went to turn in my uniform and say goodbye to the ladies.
I used to do my best thinking while staring out airplane windows. The seat-back video system put a stop to that. Now I sit and watch old' Friends' and 'Everybody Loves Raymond' episodes. Walking is good, but here again, technology has interfered. I like to listen to iTunes while I walk home. I guess I don't think anymore.
In terms of sustainability and what we eat and what its footprint is on the environment and the consequences of eating one thing versus another, obviously it makes a lot of sense to be eating insects. They're incredibly plentiful. They've got a very short turnover rate. You could be eating termites.
Though it's harder to justify the use of a cadaver for practicing nose jobs than it is for practicing coronary bypasses, it is justifiable nonetheless. Cosmetic surgery exists, for better or for worse, and it's important, for the sake of those who undergo it, that the surgeons who do it are able to do it well.