>>105701963
most cameras save as jpg for compression purposes, so thats the only valid use for it in my opinion.
reasons why everything is jpg nowdays is the general lack of undesrtand by everyone on the web about formats, this also effects videos, documents and music. no one seems to care about quality too and most crap online is full of artifacts because theres no quality control of what is being posted, some shithones like 4chan have file limits, a heavy blow on png that has bad compression.