I've always found the French countryside more open and less fenced in than other countries. My route took me from Brittany down the Atlantic coast then over the Pyrenees to Spain. I think I wild camped 1 night in 3 and only once had difficulty finding somewhere. Would have done it more often if it wasn't for the cheap municipals.
Each to his own I suppose but for me, cycling and wild camping are the perfect combination. Why compromise the freedom cycling gives by imposing detours and timescales to find accommodation? Just ride where you want, for as long as you want, put the tent up, eat, sleep and be on your way again in the morning. Beautiful.
Plus you sometimes get the place to yourself for the evening:
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