Catholicism is true enough to provide moral guidance and spiritual sustenance for many, many people. So if you are a lapsed Catholic, you could do far worse than to return to the arms of Holy Mother the Church. And this despite the deep post-Vatican II corruption. Better such a reversion than to persist in one's worldly ways like St. Augustine who, at age 30, confessed that he was "still caught fast in the same mire by a greed for enjoying present things that both fled me and debased me." (Confessions, Bk. 6, Ch. 11, Ryan tr., p. 149)
But if you are a Protestant should you 'swim the Tiber'? Some branches of Protestantism are also good enough and true enough to provide moral guidance and spiritual sustenance. And this despite the problems of Protestantism.
I should think that practice is more important than doctrine. Better to remove the lust from your heart than to write an erudite blog entry about it. The doctrines will always be debated and contested. Does the Incarnation make logical sense? Is it perhaps true whether or not it makes sense to the discursive intellect? We will never know here below.
Would it not be folly to postpone the reform of one's life until one had solved intellectual difficulties that we have good reason to believe cannot be solved in our present state? Orthopraxy trumps orthodoxy. Three elements of Christian orthopraxy: follow the Ten Commandments; avoid the Seven Deadly Sins; try to live by the Two Greatest Commandments. You won't get very far without grace, but the trying may precipitate the grace.