here's a few BLs that i think have that kind of plot (although its not really deeply portrayed but yea):
http://www.mangago.zone/read-manga/hitotsu_shikanai_mono/
http://www.mangago.zone/read-manga/yakuza_wo_shibatte_ii_desu_ka/
http://www.mangago.zone/read-manga/ame_to_kiss/
http://www.mangago.zone/read-manga/kitto_oujisama_ga_nante/
http://www.mangago.zone/read-manga/a_shoulder_to_cry_on/?MEH5
i'm sorry if these don't really suit what you're looking for :( and i also totally get what you're saying so let's hope that one day we'll finally love ourselves too !
Damn i wish i could help you. Ill come back if i and see if i have more :) http://www.mangago.zone/read-manga/kiraide_isasete/
My bad I reread the comment and I forgot about the not valuing life part all that research I just did for nothing lmao. Well all I can think of thats close is
http://www.mangago.zone/read-manga/nabari_no_ou/
And maybe http://www.mangago.zone/read-manga/07_ghost/
Oksy guys so I recently discovered that I don't actually love myself. like Id talk to everybody about how they do matter and how they are important and how their life has great value just cause they exist while for some reason I can't feel the same way about myself.
so can you recommend me ANY manga that deals with the plot of not having a value for someones life and them overcoming it and eventually valuing themselves ? it could be any genre. and thank you for reading this far I love you! (づ ̄ ³ ̄)づ