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In a simple word Trading is exhausting,and requires more energy compared when you just accumulate according to your DCA plan which is very relieving and free from losses that might be incurred when you Trade. I also say do we care about trading an asset when we can accumulate and have it in our position. This can't be overstressed as it a matter of choice which we know that every decision has a consequence wether good or bad.
I only would consider selling to buy back Bitcoin to be valid, when such investor musy have been present in the market for at least a full cycle to see how far his investment has gone, of which such investor must have a good stash of Bitcoin and has reach a certain maturity stage whereby he isn't joking around his portfolio but not a beginner or one who accumulation journey and portfolio is still below average ( best word I can use) that's same thing as chasing short term gains because you are just crashing your accumulation journey.
Selling to buy back is reinvestment in Bitcoin which isn't the right phase for anyone who don't have a good stash of Bitcoin or still in early phase of accumulation, you will surely get wrecked if you do.
It is likely that several of us will have variations of differing perspectives regarding how to consider the selling of bitcoin with the potential of buying back at lower prices.
My own personal perspective is that if you are selling your bitcoin with the expectation of buying back cheaper, then you have the wrong ideas about the whole matter - in other words, once you get to a sufficiently large enough bitcoin stash, you should be able to consider any BTC sells that you make to be "extra bitcoin" that you do not really need, so in that regard, you sell them without any expectations of being able to buy back, and yeah sure if the BTC price ends up dropping, then you can use the money that you generated from the sales of BTC to buy back BTC.. so also the selling of BTC on the way up could be like an insurance policy, but you are not selling a large enough quantity of your BTC that you are going to feel that you no longer have enough or that you need more, so maybe when you buy back if the BTC price drops, you are largely just replacing the ones that you bought and the size of your BTC stash might not be changing very much.. since you have to take into account transaction fees and also tax ramifications that can vary between jurisdictions.
So yeah.. I am thinking that your level of experience and the fact that you got through a whole cycle does not justify your selling of BTC as much as your ability to calculate the size of your stash in terms of either having enough or more than enough. .and surely there are various tools that you can create for yourself in order to consider these kinds of matters, including some kind of
a raking system that makes sense to your own personal circumstances.