It's strange to think about far away galaxies. Suppose we see a new star appear some million light years away. What we see as a new developing star is actually over 1,000,000 Years old. If you could instantly transport yourself you might find a dying dwarf star instead of the new star we perceive.
And what about even farther distances? Say a trillion light years away, there is no way we could ever see that place because there has not been enough time passed (that we know of) for light to ever travel that far.
I believe we can or will be able travel that far fairly easy, almost instantly some day.
Why, I don't know.