Then I suggest some here never play 2E or 5E where magic marts are a must. In both editions some monsters are immune to damage unless it's both a magic weapon and made a certain material. While some parties will run away from such creatures. Their a point where any group of players gets tired of running away. If as a DM they can't find the magical silver longsword. No matter how often they ask or look for it. Fight a werewolf it ends up in a tpk. I put the blame mostly on the DM. The players as well it's up tp the DM to make sure they have the right equipment to survive.
Players should not assume they will get every magic item. Neither should they also have to beg on their hands and knees either. At least with Pathfinder and DR the need for a magic mart is less it's still there. Good luck fighting a werewolf without at least one or two dead pcs if they don't have a silver weapon to overcome it's DR. Again only so many times they can run away. Depending on the type of DM if he or she allows them to run away.
Their a certain point as well where a +1 item just loses the awe factor if you will. If a character is 10th level or higher a regular +1 sword after one finds better items loses it's attraction. It's the same way where a high level party approaches what looks like to be a empty room. The first order of business at least with experienced players. Is Detect Magic/evil, Rogue checks for traps etc. Not "oh look a empty room I'm going to act like I'm first level and not check for traps or magic"
sometimes it's also obvious when a DM goes out of his way to restrict certain items which may cause resentment between players and DMs. Don't confuse suffering in silence with players being happy with your DMing style. The DM I play with currently hates magic marts yet kind of had to backtrack on finding barding for animal companions. Were at a centaur camp and it's in the middle of nowhere. So it makes sense for it to not have as many items as a city would. then he tried to make it be as if their was no...
Someone may have already pointed this out in an earlier reply, but 5E actually has a decent system set up to deal with this where you can be semimagical limited use quick fixes RAW (e.g. alchemical silver for werewolves, holy water for undead) without having to necessarily put in a magic mart.