I don't get that train of thought, TA.
If you invest part of your savings -- throwing out random numbers here -- say $5,000 and have that grow to $7,500, then get taxed x amount (15%), you are left with $6,375, no? Isn't $6,375 still more than $5,000 you started out with?
Unless you're a petty immature child in an adult's body that wouldn't invest out of principle, why would you see taxation as a disincentive in this scenario?
Or is my thinking too rudimentary and do investments not work that way? Please correct me if I am wrong.