Do marriage, two kids and home ownership fall into the sunk-cost category?
ETA: Missed the note about divorce (which indicates that marriage does fall into your sunk-cost trap definition). What qualifies as "wife cannot accept who you are?" Don't get me wrong, it's definitely crossed my mind, but in the absence of some kind of abuse, blatant disregard for my equality/dignity, or something similar... I'm not sure I have good reasons to muck things up that badly in a practical sense (even if starting anew might bring about some relief and eliminate the need for any kind of statement at all).
Assuming you survive for more than the next ten years or so, yes.
Also, your wife is Catholic. If you issue an ultimatum to deconvert, we end up with one of the three following scenarios:
All three scenarios weaken overall religious influence and raise the probability that your children will be epistemologically sane. I consider this preferable.
Edited 3/4/2012: I shortened up the summary a bit and add the following update:
Thanks for the lively comments. As a preliminary summary of things I've found quite useful/helpful:
It's almost one year later, and I've finally made tangible progress on some of the input suggested in my post about being non-religious in a primarily religious environment. That is, I have a near-final draft of a "coming out" statement I plan to share with a majority of those who know me.
I was involved in two religious communities for about six years of my life (SPO and CCR). Two years post-deconversion from Catholicism, many of them still do not know I no longer believe in god. This can make for awkward interactions for myself, as well as for my wife, who's still a believer. She thought it would be helpful if everyone was on the same page, as did I.