Are LED Marker Lights Better Than Incandescent Markers?

It sounds like if you want to replace your lights you should replace them with quality LEDs instead of the terrible ones it apparently came with. Bad LEDs, falling off lenses, dim LED's, all in 3 years? What kind of junk did they put on this thing.
I've got a 2004 trailer with factory LED lights. I've had to replace 1 or maybe 2 in the last 10 years. I think they're great.