Why doesn't Ritsu wear her hair down like this more often?
If you aren't autistic then you know same-face is a legitimate problem in art, especially anime, so don't be so defensive over your precious waifus and know that different eyes don't = a different face.
Ritsu is my favourite but the other anon is right, she's too easily confused for Yui. Same reason Ui has drastically different hair from her twin, so you know they're different people at a glance (Something different from a lot of american animation which have no problem with twins looking like twins, because they don't have to fight sameface with every character).
Because she already makes every other girl in her series look and feel like shit, if she did this all the time it would be too much.
Ritsu is perfection with every haircut
Anon, if you had a special technique (TL note: hissatsu), would you use it every time and risk shortening your lifespan, or would you use it only when your friends are in danger?
This is a very similar situation.
This special technique (TL note: hissatsu) is very strong against my heart. Sasuga, Ritsu-san.
because she looks cute no matter how she does her hair