Your illness may have started 55-60 but mine has been full blown since circa 69 and never once in remission.
But in all that time, never found anything to beat the stark simple pretty Kainuun Tommi puukko for pure heavy paring knife safety and functionality.
What actually started it all was admiring modern Morakniv and thinking how nice a peened full length tang and nice safe pretty handle would be on one. But that is NOT to be found on old knives from the town of Mora.
Added PS- not that anyone else cares, but these two above knives are my NYC sheath knives, they are stout, they are razors, they are very pointy, where every knife MUST be totally concealed (including printing), ANY "dirk or dagger" assumed to be meant to cause harm to another person in the commission of a crime until proven otherwise, ANY blade over 4" totally illegal, and any locking folder which can be somehow flicked open (including loosening a pivot screw while impounded) even once out of innumerable tries by a well practiced cop in front of judge is found to be an "illegal gravity knife". Mentioning this as a warning to any who travel there. Any clip-on knife is an automatic search and easy bust and permanent weapon charge on anyone's record.
To thoroughly hijack own thread, the two folders for NYC are always the below two, one is a locking one-hand knife which normally is suicide in NYC, but small blade, heavy lock spring and non-adjustable pivot make it flick-proof, while the other is a corkscrewless old style German Army 108mm knife by Victorinox ("Pathfinder"), which is a large slipjoint with heavy spring detent, and which also is under 3oz and offers multi-tool capability of slotted/phillips screws, prying/scraping/gouging, can/bottle opener, and wicked useless saw (except maybe ripping boxes).