Chris: I am not surprised at your experience in trying to sell the boat, and I take no exception to your distaste with the survey process in this case. It seems for the best that this potential sale fell through. If you really wanted to sell the boat, you would have gone through with the survey (although I do agree that a four day survey for a boat that old at that price is really overkill).
I must respectfully disagree with the crowd here who suggest that you force yourself to go sailing now for your own good. Sailing and cruising are supposed to be enjoyable; we do these things sometimes because we want to (its fun!), and sometimes because we have to (stress relief, need for adventure, get away from the rat race). I don't know anyone who goes sailing or cruising because its the nautical equivalent of eating your vegetables. I've read a lot of your posts here, and I've followed your website. I sense nothing of the "cold feet" or "I've bitten off more than I can chew" to your writing. You sound like a young(ish) couple who have been involved in an all-encompassing, consuming effort to reshape your lives, and now that a major part of that is over, you are asking yourselves "what the heck are we doing?".
I am not a psychiatrist, nor do I play one on TV, but I think you have it right: keep the boat for now, maybe work on it some more (that seemed to be fulfilling, right?), maybe do some sailing, maybe not. No right or wrong answers here, just a lot of questions that only you two can answer.
You did a wonderful job with Heron; have you considered making boat restoration your chosen profession? If you aren't familiar with Tim Lackey's work, I highly recommend his website:
Lackey Sailing LLC | Restoring and Rebuilding Great* Boats
Maybe some ideas for you.
Best of luck to you, and I really look forward to reading about what comes next.