It is not a good ideal to inv all momney into btc, because it can be bad if you are making mistakes with Bitcoin so you can lose also a lot of money if you selling it too early.
In investing a calm mind is needed and you are correct. We dont want to be making mistakes when it is already dont just regretting at the end. We need to stay wise before making decision or choices. Specially now that there have been a lot of alt coins that are being created.