Bitcoin investment compared to other investment can make newbies who have the zeal of investing in bitcoin lose interest.It also increase fear of loss and indecision in bitcoin investment.So on the contrary, bitcoin should not be compared to other investment because bitcoin investment is a decentralized investment that is best for long term(hodling)with the belief that the price will go to the moon.
That's why I think the DCA method is the best, but the time limit for Bitcoin investment should be at least 10 to 12 years.
Your suggestion for what should be considered a long term investment in Bitcoin is not bad. It will allow one see various halvings activities and experience market cycles. However, it does not really have to be that long to be considered a long term investment. I am in agreement with JayJuanGee that 4-10years is a good target even though it could be longer. This range is enough for any investors to be able realize a reasonable stash of bitcoin also gauge his level of patience and commitment to the bitcoin buying process. By the present Bitcoin market cycle, the same period will most likely give but bull and bear market which will give the investor clear of how bitcoin price behavior is for each of those seasons.
Bitcoin will reach its peak after 2030, and you will be the participant who will benefit from the most investment.
I don't know how you arrived at this conclusion and if there is any substance to such claim. Are you saying that by 2030 the block reward will be zero? What do you mean by the peak. Or should I assume you are doing some technical analysis stuffs that make you arrive at such conclusion.
Whatever be the case, the most important thing is to buy and hold bitcoin, that is the only way to find out what the future will look like. The worst thing is to sit by the sideline while others are buying and securing their bitcoin portfolio.
I don't think he is assuming things when he said that the block reward for miners will get to zero. I think he is trying to say that after the up coming halving that bitcoin miners won't be getting bitcoin as rewards. Instead they will be getting their reward from transaction fees. It's not just him doing some technical analysis on his own. This is something that everyone who has been in the bitcoin investment for long is quite aware of.