Originally Posted by WarKitty
Definitely this! We have a big deal over disposable products vs. more long term stuff. My other housemate is of the opinion that if you can buy a disposable product you should, because he doesn't want to "waste time" cleaning things. I object because of the expense - it costs way more to keep buying new stuff than to properly take care of things.
While it does cost more monetarily, you need to look at the opportunity cost as well. Your roommate seems to value their free time more than you do (in a monetary sense) and hence accepts the added expense of continually buying things rather than the alternative of using up free time and less money. Compromise would probably be the best here. Sure buy some disposable stuff but also show them that some things are quick and easy to clean (or whatever) and that it is worthwhile to have permanent things in those situations.