In 1984 some friends introduced me to the SAK supertinker. My previous impression of SAKs was bloated monstrosities filled with useless junk. The supertinker wasnt that, its easily pocket carried, had only useful tools, meaning things I actually use, (Ive never wished I had a corkscrew, YMMV), and everything worked. I bought one and dont think ive been a day without it in my pocket since then. When doing carpentry anf cain building, I used it pretty much every day for something. I dont think Ive used anything besides the scissors in the SAK to cut my fingernails since then. ive even cut my hair with it.
About 10 years ago walmart had them for pretty cheap ($25?), i bought a spare, since my scales were cracked and kept falling off now and then. The newer one isnt as good as the older one, particularly the scissors, but is still a very good tool.
A friend was helping do stuff at dads. Food time. She asks where the can opener is, I pulled out my SAK, she looked at me, "No, can opener..." "Uh, i dont know, this is all I ever use"