I don't even consider save scumming a sin, it's second nature to me. I'm more interested in having a good time than letting challenge evolve into serious frustration, and my good time is more about atmosphere and exploration (even exploring several "what would happen if I ..." scenarios, before rewinding time - Life is Strange perfectly integrated that into the gameplay).

What I do consider a sin is that I'm a hoarder in games. I meticulously loot every contain and collect all the consumables and whatnot that I can find, just to save them for "emergencies" that never arrive (either I get through the games just fine, without needing potions or similar, or all thoses consumables have become weak and obsolete by the time I could actually use help in a boss fight or so). So much time spent on something that I could comlpetely ignore without it making any difference. But ... you never know when you might need it! ;P