Even if they did all that "speed of light" travel, wouldn't there be problems with time dialation? What's the point of sending a ship somewhere 1000 ly away if they (or any info) won't be back for another 2000 years. Isn't this a valid problem?

The only solution I see for "ET" or our space travel is with wormholes or some other way of bending the fabric of space which would allow quick jumps from one point to another. I read about this Warp drive idea, which was apparently theoretised by some Mexican physicist. Wiki about faster-than-light and warp drive.