The question is very much arguable; many will present their facts and reasons for why they chose the answer they chose. Currently there is no asset that has proven to be competitive with Bitcoin, so we can say that Bitcoin will sit on that throne for a long period of time.
But we are in the era of change, where new impressive innovations are welcomed and accepted. If in the near future there is ever going to be a new asset that will fill in the gap that many consider to be very important, then there will be a shift in choice, but that's not going to happen anytime soon, not even in the next few decades, but in the near future we should be ready to accept change.
For now, bitcoin is the perfect choice, but we can’t tell how bitcoin will perform in the future, or if there is any other coin that will completely replace the current position of bitcoin. Let’s be optimistic but let us never close doors also for those new coins who have higher potentials than bitcoin in the future.
Let’s be open-minded instead. We can always stick with bitcoin for now, but if new opportunity comes along, then we should also learn to make some adjustments or change of decision making.