How many times can you reuse spokes?

on-yer-bike

After only one winter for the rear rim my H+Sons are only showing a pin prick of a wear dot, hardly visible. The back spokes have now had two rims, the front one rim, but the front spokes are thin 2,1.5,2. Both are 32 spoke. If better to replace spokes I will look at Pacenti to make a change and maybe tougher too.