I've experienced this too, but I think for me it's a blessing in disguise. Two years away from processed foods and old favorites (frozen pizza, frozen breakfast foods, other convenience foods) just don't taste right. It does motivate me to make my own, though. Also, ingredients have definitely been changing. I recall a thread about how Lea & Perrins just doesn't taste the same these days. A lot of snack foods have been changing from trans fats to saturated fats, and that could definitely change the taste and texture of things.