I am extremely lazy so I go grocery shopping once every few months (canned food and the freezer help stretch this time, but quite a bit lasts a while in a regular fridge, like eggs and cheese) and my meals are incredibly simple (sandwiches, salads, things thrown into a giant pot, rice & toppings, etc).

Well either you spend time doing something yourself, getting a better result for less money... Or you pay for it.

Buying junk food all the time is not somehow good. Perhaps you are not completely responsible for being in that situation. It is still a bad idea to eat such trash, essentially robbing your future self of a healthy body. If that is not worth 30 minutes per day, then so be it.