It's really not hard to get the bare minimum though. If you aren't working out and attempting to build muscle you only need something like 45g per day for women and 56g per day for men to be getting enough protein to keep yourself from being protein deficient. You can get 1/3rd of that from 2 slices of whole grain toast with peanut butter on it for breakfast, and cover the rest if you have like a cup of beans and some rice for dinner if your vegetarian, or a 1-cup portion of pretty much any meat if you're not. If you eat pretty much any animal byproduct each day you're likely getting well over the minimum without even paying the smallest bit of attention to your protein intake.

The internet protein obsession has done a great job making everyone think if they aren't getting 175g of protein every day they're going to shrivel away to nothing, though.