Maybe we should exchange blood reports before we talk or get to know anyone. Maybe we should just carry our blood reports around just like our driving licences or PAN cards or social security cards....maybe that'll reduce some of the cynicism we see today
this is a pretty extreme situation.
But i agree with the need to have a blood test before the marriage. If, god forbid, either you or your partner is dectected with some sort of discease it need not be the case of tata goodbye....but it would help in doing the required thing now and potencially save the person's life.
Remember the more information you have....the more informed you are to make decisions. Whatever the decision you take!