For me everything below 50% is an opportunity. I don't look for total bottom because most of us will never be able to predict that. All we can do is choose a level we're comfortable with and be patient afterwards. People who keep searching for the bottom are the ones paying huge exchange fees for buying and selling just to be that 2% closer to the bottom not realizing how much they're losing in the process. I started buying at 35k and kept buying until 29k where I run out of fiat money. I feel comfortable holding this even if we fell lower and I can wait until the next halving.
My minimum target price is $100k. If we won't reach it in 3 years I'll probably rethink my strategy.
I hold the same opinion, bitcoin in a way is like any other product, if a very expensive house you have been wanting to buy was given a 50% discount what would you do? Would you wait until the discount raised to 60% or would you run to buy it right now? The truth is that you do not know if the discount will ever reach 60% as there could be someone which buys it before it reaches that point, so even if you could eventually buy the house for a cheaper price the opportunity right now is so good that you cannot let it pass.