Just to give some balance:
a) Mankind has spread these diseases, if destroying wildlife was an acceptable solution there might be very little left to enjoy
b) modify habitats, often beneficially
c) true in part, the nobility valued and hunted them, the peasants hated them as competitors to their own swineherding
d) Sus scrofa scrofa truly is a wild boar , not a domestic species or hybrid
e) Obvious benefits to biodiversity such as breaking up stands of bracken to enable ground flora seeds to germinate and provide the broken earth habitats in which ground dwelling bees and other invertebrates thrive