@pinkie100 , it’s a question that’s been posed a few times, “should I start a therapy when I feel so healthy?”
There’s no easy answer, as no-one can see the future. Will you continue to feel fine and healthy or will the MS progress to cause you issues?
Tysabri is one of the more efficacious treatments. But all Disease Modifying Therapies (DMTs) should be seen as an insurance for the future.