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It seems that we would not invest into bitcoin if we were not optimistic about it. At the same time, we can adjust our position size to coincide with our level of optimism.. If our optimism is high then our position size would be relatively high, and if our optimism is low then our position size would be relatively low. Accordingly, there should be no need to invest one way or the other outside of our self-assessment of our level of optimism in regards to the asset (in this case, bitcoin).
Yes, I agree with you that in essence we have to determine our optimism towards an asset like bitcoin based on ourselves and that is indeed very important. Because investing is our own responsibility, so all the risks and everything else we ourselves will feel. That is why optimism towards bitcoin is also certain that the way of interpretation will be different for each person and will not be the same for all. Because everyone has a different understanding. That is why our level of optimism towards bitcoin will also definitely be different. But I personally am really optimistic about bitcoin. The reason I am really optimistic about bitcoin is because bitcoin is truly decentralized and has a very good system. That is why I am very sure that bitcoin will continue to be popular with more people. So because of that I am sure that bitcoin will truly be a future asset with great potential.
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Being optimistic is good so long as you are doing the right thing. But being too optimistic is also not a very good idea in whatever you are doing. Believing in bitcoin is all you can do. Investing consciously is also very important to avoid investing beyond your capacity just because of the level of optimism you're describing in this context. We would never wish for something better as this is the only coin that has stood the test of time.