When I lived alone, I still bought some bulk things and non-perishables. Like Andrew said, I might buy a large package of bacon and portion it out and put part in the freezer. Rather than buying that already cooked bacon that you just heat up in the microwave, I would make my own. I would buy a big package of raw bacon and cook it all at once, then portion it out in one meal portions and freeze it then when I wanted bacon, just pull out the portion I needed and heat it up. It worked well for me. Don't know if it would work as well for young adults, especially men, because I don't know if their minds work that way.
Me 50, H52 Divorce from XH final 12/17/2014 Marriage #2 12/31/2019 5 adult (step)daughters (3 from XH's first marriage, 2 from current H's previous relationships) 4 grandkids (plus 2 on the way)