I've heard though of some people spending upwards of like $150. For food?

I certainly have never spent more than $35 ~ $50

Are you talking about one meal, one grocery store trip, or one month of food expenses, or what?

and it's just me.

OK, so you're not trying to provide food for a family, so your perspective and experience is limited.

I don't know why these other people just struggle.

Perhaps their situation is different from your own? Perhaps they have other concerns in their life that are different from your own? Perhaps the cost of living where they are is different from where you are?

I think still that it comes down to bad budgeting and maybe some poor lifestyle choices.

So you're ignorant of what problems other people might be facing, and to fill in that gap in your understanding you've decided to blame the people who are having problems. Great.