"Don't throw the baby out with the bath water"
Depending upon the problems that you are having with your legs, massagers could be of help.
The foot contains 4 layers of muscles soaked in blood....a right "bag full." If this is slow to clear and get back to the heart for recirculation then you may well develop swollen and aching legs.
Massagers help to pump this blood back to the heart.
Many surgeons after major operative procedures e.g hip replacement will attach electrical massagers to the feet, ensuring that the sluggish blood reservoir in the feet will not cause trouble e.g DVT.
No I have never used one.