My 'crust' philosophy....
If you own a NICE bike...a deluxe bike, rare even ....but it's rusty and totally hammered
You are doing nothing for the bike leaving it as a rust pile.
Do the bike justice and bring it back to glory with a competent restoration.
If you own a no biggie bike, unequipped base model etc...
that's rusty, incomplete ...ugly..... beat.. Make a 'rider' out of it...and enjoy the rust!
Or if there's sufficient demand? part it out.
I have a higher "rust tolerance" if it's an extremely rare bicycle that is complete...
and not so far gone that the paint details are still recognizable... and the components
are mostly all there.
As a rule, I don't have the luxury of owning a giant pole barn where rusty bikes can
be stored and languish unridden or enjoyed. Los Angeles being what it is $ wise
to live here... the philosophy is somewhat governed by the $ per sq. footage to survive here.
I collect NICE unrestored originals... and I restore Rusty deluxe bikes back to former glory.
One thing to note....Now that modern retro bikes resembling classic balloon bikes are everywhere
the crusty bikes will often garner more Lookie Loo attention than nice unrestored originals....
which, sadly, to most every typically blind American consumer, appear to be just another retro bike.