Why should people care about Mark's Gospel?

Answer 1

Christians care about Mark's Gospel because it forms part of the New Testament, even if almost everything in it can be found in other gospels.

Scholars care about Mark's Gospel because it is the oldest of the canonical gospels and because the other three New Testament gospels were based, directly or indirectly from it. Thus, for example, Matthew contains approximately 600 of the 666 verses in Mark, many of them in exactly the same words in the Greek language. Although scholars say that we can never know who really wrote Mark's Gospel, they recognise that it does provide invaluable material to study the very earliest decades of the Christian faith.