Bear market is the good time for us to take advantage to choose in which coins that has a potentials to increase in the future that will give profit to us, and it is really a good chance now to buy them as long as you know how to choose the right one coins to hold in the long term of course.
I guess we do not need to think and regret about what were the opportunities got missed or anything similar and related to bear market but we need to plan up and get ready for grabbing opportunities from the ongoing bull market. I need to agree with OP that the current bitcoin market must be insanely bullish but only very few people are making use of dips to ride along the bulls.
It means you cannot get into peak levels even it is strongest bullish trend right now. But, you must wait and enter at dips so that you can maximize your profit making opportunities.