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Well, while investing in Bitcoin, it's essential to have a view of your finances. That is to say that is not just about the available funds you have for investment, but your overall income and expenses, as well as any future inflows of discretionary income. Doing this, can help you create a very thoughtful investment plan that will aligns with your financial goals and your risk management.
When putting extra money, which you are absolutely right that, there other options for one to consider. While some people may choose to buy Bitcoin immediately, while others might put aside a part or portion for buying dips or adding to their regular DCA. Which is to help to make informed decisions based on individuals capacity and their financial goals.
Also, it's true that holding back money to buy dips can put those who have limited discretionary fund or those who are early in their Bitcoin accumulation might find it confusing in making a well informed decisions or plan in their investing. But, in this state, it might be more proper or productive to focus on regular investing and allow the power of compounding work in their favour.
So, the best thing to do, is to have plan or strategy that will work or favour you and your financial situation. For it will help you to be able to achieve your success with Bitcoin.
Part of the problem of poor people waiting or employing waiting strategies rather than ongoingly buying is because it takes a real long time to build any kind of investment stake, and even a person who is able to invest 10% of his income is going to take 10 years to have 1 years worth of income invested into bitcoin.. there are a lot of poor people who may well not even be able to put 5% of their income per year into bitcoin, so it could well take them 20 years or longer to invest up to 1 year's of their income into bitcion.
So part of the point is that they have to get a stake in up before fucking around with waiting strategies or buying on dip or anything other than just employing persistent and regular buying. So yeah, poor people frequently end up screwing themselves by failing/refusing to stay focused on ongoingly buying of bitcoin, which is likely what they need to start to feel progress that might take them 10 years or more before they will start to feel that they are making some meaningful levels of progress, and I doubt that they are going to help their position by fucking around waiting for dips that may or may not end up happening.
And yeah, in the end, each of us can do whatever we like, even dumb shit... and waiting, trading, getting involved in shitcoins are all dumb strategies, especially for poor people who should be figuring out how to ongoingly, persistently, consistently, regularly and perhaps even aggressively (within their means) be accumulating bitcoin through buying.