For 90% of the cutting I do a 1/4″ blade would suffice.
A good rule of thumb for knife use is to use the shortest blade that will get the job done- unless you have a small dick you don’t need to pull out a 6 1/2″ blade to cut the tape on a package.
After 50 years of pocket knife carrying I’ve learned
1- you will cut yourself
2- the less blade there is, the less damage done when you make a mistake.
Did this, this afternoon, cutting a cable tie and trying not to cut the cable it was holding.