So you say that my estimation of the technology we can come up with isn't probable and we'll never know what we're capable of in 200-500 years..
But who's the say the Earth even lasts to that period? I think the hardest thing to estimate is exactly when the world ends. It's much easier to estimate what we could possibly create.
However, look at the rate we are currently going.. I don't see a galaxy traveling machine any time soon. I
suppose something that could maybe reach around our own solar system, but outside of that? Nothing. Perhaps an analogy may suit us:
Let's look at the continental United States for a moment. Imagine if it didn't have its highways. If you went out traveling on a full tank on gas, you likely wouldn't even leave your state. Sure, you'd know the general "east" and "west" direction, but considering all the mountains and hills, who's to say you won't change course? Who's to say you won't get lost?
Our highway systems are successful for the following reasons:
- Gas stations, restaurants, and motels are essentially checkpoints.
- Even if you could not read signs at all, almost every town has a motel, gas station, and checkpoint
- Signs that show miles, destinations, and routes are paths.
- Even if you ran out of fuel, you could just call highway patrol. Possibly even some random stranger could help you out.
- The highways are constantly cleaned and inspected.
Now let's compare the universe to the continental US highway. Well, there certainly aren't signs to tell you where you're going. There are no checkpoints to refuel your body and vehicle. It's mostly desolate, so if you get stuck in a part of the universe where there's literally
nothing, you're all alone. By the way, some solar systems and galaxies may not even have a source of light. Can you imagine the possible amount darkness?
So, what does this have to do with technology? Well, the only reason we have a high way system is because there's a clear population of intelligent beings. America is filled with tons of towns and roads already for us. We can clearly measure distances because we can easily travel them. The universe doesn't have that same accessibility. It would take far too long to create conditions in which the universe could be used like a high way system. We haven't even done the most basic thing yet: travel outside of our own "town" (or house considering the size of the universe). That's ignoring the safety conditions as well. Highways are closed and opened depending on how safe they are. The universe? You'd never know if you were traveling into a blackhole or not, and can you imagine being immortal and getting sucked into a black hole? Being hit by possible comets? There's honestly no telling what safety hazards are out there.
Honestly, I see no reason at this point for any person to wish themselves to be immortal, because no human on Earth can be prepared for this based on not just our physical needs, but emotional needs as well. When people say they want to be immortal, they assume the world will last forever. Traveling the universe is a lot like traveling America with a full tank of gas and everybody possibly being in California while you're in... Maine.