Plenty of time to save up for the holiday in Proximi Centauri

When will we have the energy for interstellar travel?

Never, we will destroy the earth before it ever happens.

the only way to do this is by means of setting ones mind free, and allow our body to form itself on the planet you want it to be formed...we can do it...Is'nt it so that the human body changes its cells every 7years, yet we can recall memories beyond that.

i would say if we can imagine it, then it is possible...evident the movies that was made on how people can travel...we dont have to transport lums of earth to a distant galaxy that is more impossible than what i am suggesting.  Its just that we dont know how to do it-perhaps we have to die first...perhaps we are like unborn babies, and cannot do the things that grown ups are doing.  Perhaps we would be born into a better understanding:)

to make it worst, one can suggest, that your guess is as good as mine:D

No, actually it isn't. Some cells are replaced every few days, others survive for the entire lifetime.