Sloths are moving ecosystems, a sloths back is a common habitat of a moth. Moths eat mosquitos as a daily snack, so, without sloths, there’s no moths, without moths, there’s more mosquitos. And I don’t know a single person who likes mosquitos.  
     Sloths are becoming endangered because of humans, we’re cutting down trees in South America, which is messing about the Sloth’s habitat. https://www.globalanimal.org/2017/06/30/enemies-at-large-the-threats-of-sloth-populations/146987/