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My Reform rabbi told me that it is okay to do mitzvot as long as I do not do them because of a sense of obligation. Same goes for believing in ikarei emunah / chovot ha-levavot, that mitzvot observed and machshavot thought must stem from a belief in a "personal choice doctrine." Now, why is that illegitimate according to Orthodoxy?

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@msh210 - What are your thoughts?

@AdamMosheh Is it legitimate according to itself? Suppose one must either eat matza or not eat it, and his choice is not to. Is he allowed to eat it? Well, no, that'd presumably be because of the sense of obligation. Is he allowed not to eat it? No, that'd be because of following the rabbi's dictate "do not follow the sense of obligation", which is also a sense of obligation.

@msh210 Weak response. AdamMosheh can now change his claim to "one should not do them out of a sense of external obligation." I think that's what he intended anyway.

@DoubleAA He'd have to change what his Reform rabbi had told him. In any event, what do you mean by "external"?