I added bits to the bitcoin-qt gui. I like it because when 1 btc = $1 mil, then $1 usd would be 1 bit, and 1 sat would be 1 cent. 100 sats = 1 bit. Its mentally easy for people to reason about for a near term price of bitcoin.
I use bits when determining the sizes of my lightning channels. I think the only other person who agreed with me was jimmy song (who authored bip176) and adam back.
The bit denomination has also been used historically: