I am sure the introduction of the Chorleywood Process for mass-producing bread has contributed. Buy a loaf from an artisan/traditional bakery - here's one that sells its bread in the area
http://www.evershotbakery.com/ - and it is a world away from Hovis, Warburtons etc. Then there's the insidious adding of sugar and corn syrup to everything. You have to be very careful these days when buying something you think can't possibly have sugar - I was caught out by hot-smoked salmon with black pepper. Yum, I thought as I munched away; halfway through: 'this is too sweet'. Sure enough, Demerara sugar was one of the ingredients. Ok if it said sweet chili but pepper-coated? Lesson learnt!