If you have missed investing in Bitcoin, you have already missed it, and you can't turn back the hands of time. So the best thing is to just forget it and move on and no there's no need to regret.
Not investing in Bitcoin in the past should now be motivation to accumulate Bitcoin well for all the time in the past when you were unable to do so. There are still opportunities for those who didn't invest in Bitcoin in the past to invest better even at this time. I see no reason why one should regret something they never understood, and it is possible for one to make mistakes for not understanding Bitcoin.
What missed was already missed and there is no time traveling machine for anyone to use for going back to the past and changing our actions for better decisions. What we can change is our knowledge, experience from past lessons, and make better decisions in the present, which will change our future.
We wasted opportunities in the past, did not invest in Bitcoin, it's okay as from now we can do it if we want. The bottom line is if we can invest money in Bitcoin from now, we will have advantage against many people who only start their investment in next Bitcoin halving in 2028 and even more far years in the future. If we can invest, and if we can hold our bitcoin a long time, we will get profit from our determinant practice with our money and bitcoin.
We can belong to many people who invest and get richer with Bitcoin.
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