You have my respect mate, how about someone who has made 80% of their invested money back already? Does it make sense to sell their GPU right now or keep mining through the bear market?
It doesn't matter how much money you 'made back' on your equipment. What does matter is what you can do now with that equipment. You can keep mining or liquidate at any time. It's impossible to time the market perfectly, but you need to predict whether losing 2-3 months of profit is worth being able to buy back the equipment at half the price. You have the same hashrate as before PoS, but you collected an extra 50% ROI along the way.
I'm pretty sure 2-3 months of mining even in today's market will never give you 50% ROI. That's why my strategy is to sell the rigs in May, then buy new equipment in August.