Why kundli matcing is important (foresightindia.com)
Match making i.e kundli matching in vedic astrology is consider very
important before planning for marriage.Horoscope matching is the analysis of
both boy and girl’s natal/ birth chart.There are 36 different gunas .For a
couple to go ahead with their marriage plan, they need 18 gunas during their
horoscope matching.

Kundli matching helps in getting an insight of the marriage’s longevity,
mental consistency, any manglik dosh, the durability of marriage, tendencies
contrary to each other, children, general health, sexual health and contentment
during the wedding. It also details physical, emotional and spiritual
compatibility of the couple. These factors decide the stability , longevity of
the relationship.

The most important aspect of Kundali matching is the managlik dosh, i.e.
Mars taken into consideration. Mars is an important planet for the success of
marriage and good health in both the Kundli.