Can a person who has no health issues make use of a shabbos elevator?
There are many moving parts to this question. Even if it is permitted to use a "Shabbos Elevator" which has everything in place technologically to override the weighing system, electronic eye, etc., there is a very real and common issue that a routine repair to the elevator can remove the mechanisms which made this elevator useable for Shabbos.
Returning to your question, assuming everything is checked before Shabbos, Rabbi Broyde and Rabbi Jachter conclude, "While it is true that some halachic authorities permit one to use an elevator both for ascent and descent, it is clearly better to avoid putting onself in a situation where one will need to routinely rely on lenient opinions." See here for another beautifully comprehensive explanation shared by Zomet Institute.