Going to Gliese 581 c
Well, you are not mistaken that travelling at low speeds you would never get there.
However, there are moves afoot to send (uncrewed) probes to the nearest stars at significant fractions of the speed of light and to send back pictures to the Earth - (e.g. the Breakthrough Starshot project). In which case, information might be returned to Earth on timescales of 100 years.