everything can happen, maybe in future a new altcoin can beat bitcoin, i dont know what is that's, but the technology will be higher than bitcoin.
but if we see some fact of bitcoin adoption, im sure bitcoin can survive
As an investor for the halving, its best to wait it out then locking away or investing your funds right now. A lot can happen over 4 years, so it would be rather best to put in your money in the 3rd year. I don't see prices going up between then and now anyways.
Yeah, investing bitcoin before the halving is really good and the best way to do. Luckly i invest my money into bitcoin before the halvin. For now, i don't think invest in bitcoin is a good way. Because we don't know what happen next.