It depends how close you sit to your TV and how large the TV is. I can tell a difference if I'm close enough or if the screen is large enough. As well, try turning on a streamed 1080p show and using a 4k bluray (if you have all of thrsr things). When you stand close (like, closer than you'd watch), you can really see the difference. As you back away, it becomes less noticeable, but even at comfortable viewing distances people can see the difference
You can see an example on your phone. Try watching a video in 1080p and then 480p. You should notice a difference, even if you hold your phone a foot from your face it's the same idea when watching on a tv.
That if you weren't part of "our" religion (my family's religion, Catholic), you were basically living your life wrong and were an awful person. When I went to college I met people who believed different things, including in nothing, and I realized they were not, in fact, terrible, almost subhuman, people. I quickly changed for the better and that's one of the best things to ever happen to me. It's amazing how accepting you can be when you just accept people for who they are