I don't think anybody consciously chooses the RHP, it's kind of the default setting from which some people decide to take the LHP because it suits them better - it's not as if occultists would suddenly find themselves at a crossroads at one point and then be forced to make an irrevocable choice between good and evil, that's fiction. Defending the LHP as a valid ethical choice and debunking all the misconceptions about the LHP (or Satanism in all its forms, Luciferism, demonolatry, etc.) isn't my job and has been discussed in various forum threads anyway.
That
Egocentrism thread made me think… bringing about the Age of Light and so on is basically a theosophical idea, before Blavatsky everyone was in it for themselves but after her, occultists generally fell in love with the general idea but secretly
still were in it for themselves, until LaVey came along and preached to his fans that it was ok to be in it for themselves. The chaos magicians were in it for themselves right from the start, and now everybody is more or less openly in it for themselves.
Living a virtuous life as a servant of light, god or whatever alone won't help the children or heal the world one bit. 'Tapping into' (sounds disrespectful, are archangels milk cows or something?) the celestial powers
still means you're in it for yourself - which is the very definition of the LHP. The RHP has always relied on religions for its general philosophy which also has been a major weakness because in this way, it inherited their hipocrical morals, like "We abhor black magic unless it's for the common good", "We don't curse people unless they're really evil", "I may be in it for myself but once I'm there (which may take several lifetimes) I will unselfishly help my fellow men", "I despise violence but some people shouldn't be allowed to…" etc.
As I said in the beginning: I don't think anybody cares much about the RHP. Or the RHP vs. LHP dichotomy, about which somebody with a chaos magic background like me never every gave a shit anyway.