One old wives' tale (*not* attributed to Roy) is that ladderline has
lower loss than coax (given as a blanket statement). Therefore,
laderline is "good" and coax is "bad."

However, compare something like Andrew LDF4-50 to Wireman 554 and you
find that the "lossy" coax has a loss of 0.48 dB/100' @ 50 MHz and the
"low-loss" ladderline has a loss of 0.41 dB under the same conditions.

If they make a coax as low-loss as ladder line, I'll concede you that - but
then:
Could we agree that ladderline (or window line - or twinlead) has these
characteristics:
1. Ladderline (or twinlead or windowline) costs less than an equal length of
low-loss coax .
2. The weight of the ladder line would probably be much less than the weight
of an equal length of low-loss coax.
---Well, sir - that sells it for me. I'm a cheapskate and I don't like the
coax loading down the dipole and stretching it from all that weight. AND I
like to play around with something other than the 50-ohm ho-hum stuff.
Ham-nerd is a good word, I think.