Cmv: am/pm time is pointless; it would be simpler and more straightforward if everyone started using 24 hour time (e.g. 18:00 vs 6:00pm).:
If I understand my history correctly, the idea of a 12 hour clock is basically a relic from a time before we had better ways of measuring and keeping track of time.

I don't see any benefit in continuing to use this system. However, if 24-hour time became the standard, there could only be positives. It makes more sense numerically, since there's no need for a modifier like "am". It should make mental calculations concerning time simpler. It also makes things less confusing for the average person (no accidentally setting your alarm for 7:00PM.)

From what I can gather, the only reason we still use 12-hr clocks is because of tradition and/or refusal to change.