The old machines are totally GREEN - they will not be in a land fill if they are cared for and used. The plastic wonders are a done deal - they are NOT green and WILL end up in a landfill in a few years - I highly doubt if they will last 100 years. Then, too, older machines can usually be revived even if they have been badly taken care of if given enough TLC - if that doesn't work they can be used to rescue other older well made machines. Don't get me wrong there are some old machines that aren't worth the bother. Learn all you can by reading the vintage sewing machine posts here on QB. Educate yourself - think for yourself... (I know that is rare...)