Theres nothing morally wrong with this, in general (though it might anger or exasperate some priests), because the simultaneous belief in, and existence and influence of, multiple deities is the Realms norm.
A small handful of the populace (less than five percent) dedicates themselves to one god above all others.
But too many became coinless wastrels wandering distant realms as forgotten kin, hating their noble connections and without the means to reap revenge.
Bara: More than once have I come upon some mess caused by adventurers only to have them tell me that they couldnt prevent an incident's occurrence because their mage was "under the control of an ancient and malevolent artifact of evil".
Also its own wiki (not quite comprehensive either) and "official" fan site (where Word of God usually can be obtained, whether from archives or present writers and game-developers) The nobles of Cormyr — including the royal Obarskyrs — were notorious for having many bastard offspring.
Most of these turnshields, as they were called in polite company, were sent away [...] Some became skilled artisans loyal family retainers, or even "heirs in reserve".