As you will recall, QuickSilver, in many discussions of “Love” (Plato comes quickly to mind) there is major opportunity for misprision between several meanings of the same word, which overlap sufficiently that one unconsciously switches between them and hence makes illogical conclusions that appear sensible until careful analysis draws the distinction.
I don’t think “faith” is an emotion per se, but I take the context of your basic point. The need for “eternal security” in a world that is changing more rapidly than some people can handle is a staple of some schools of conservative Christian preaching. Many of us have seen people cling to their understanding of the Bible stories in order to have something stable to which to attach their need for security in life. Others, needing some ideal love that is not present in their life, find it in an idealized “Jesus, Lover of My Soul.” And so on. People are very creative in finding in God the thing they need most in their life. Poison, some years ago, brought out a song with this general theme: “Something to Believe In.”
This does not, however, rule out the object of their belief as a wish-fulfillment fantasy. Two, objectively equally probable, theories can be derived, depending on your view of what reality encompasses: (1) These people invent a god who provides for their emotional needs, or (2) These emotional needs are present as a part of the human nature given by a beneficient god who wishes to have people freely come to him in love and hence instills them with needs that he can fulfill. (The implication in case 2 would not be that he creates them emotionally crippled, but that the needs themselves, “pure” and not warping people, are his gift, the warpedness being due to human environmental factors and not his doing.) – And I’m sure Gaudere can easily find it possible to generate other scenarios.
As I’ve noted on other threads, there are and have been intelligent people who allege that there is one theistic god in charge of the universe and who is interested in humans and loves them, and there are and have been equally intelligent people who allege the opposite. The answer to this question, divorced from emotional needs, is one that is worthwhile to resolve for each individual. And the discovery that the former option is true entails a response that is described by the generic name of faith.
Finally, faith becomes the term for a dogmatic system of beliefs, rationally arrived at from a set of non-rational principles derived from revelation (or other source, in a few cases), and used socially to instill conformity. While I have a feeling part of the negativity towards “faith” that your post seems to show derives from this last point, it is not particularly germane to our purposes here.
So yes, faith can be an emotion, and I think generally is emotionally based. But that says little about faith’s object. And getting beyond the individual psychological needs that go to generate it, there are quite real metaphysical questions for which the facile assumption of “filling psychological needs” does not provide sufficient refutation.