Science is both a boon or bane but it depends on how the people use science. Is a boon in many ways like health,medicine,technology,advance career
opportunities but its other side is totally different. It includes war
A topic can be both used in a good or bad way like atomic energy if harnessed is very useful but it can be used to make weapons for destruction. So science being a boon or bane totally depends on how you use it.