My regret although i did not regret much is buying Ripple at 0.032 since June, the price has never pass 0.3 since then and i don't think it will ever get to that price this year. Buying ethereum recently at 480 hoping to sell at 500 and watched it fall to 320 with little or Nothing to do. i can't stand it.
Both of your regrets must have turned into good decision if you have held till date. Crypto is unpredictable. 