I have been taught that one is committed to land once DA or MDA is passed. I would appreciate your point of views.
IMHO you have been taught wrong then, all sorts of things can cause a GA below decision ht, messed up landing, windshear and runway incursion to mention 3. Personally I would have gone around and turned to be clear of the departing aircraft - then, after landing phoned the control tower and filed an MOR!