Hello and welcome,
Thanks for your query.
Masturbating has always been considered a safe and healthy activity. Kindly do not think otherwise.
although convenient, can effect married life in only one way. That is by reducing your libido towards your wife in a minor (small way). You need to understand that this is in no way harmful or unhealthy. The only reason why it is advised to reduce the number of times you masturbate after marriage is so that your libido and energy could be directed towards satisfying your wife. If you do masturbate, it will reduce both your libido, and energy levels, which could result in a slight drop in interest towards sexual intercourse if your wife requires it.
Masturbation is healthy, and in no way effects your sperm count
or production. You will be able to pleasure your wife even if you do continue to masturbate after marriage, and by all means impregnate her as well.
Nightfall also is healthy, and one you are married you can direct all your sexual energy towards your wife.
I hope I have succeeded in answering your questions, you could write back to us anytime for further clarifications.