The opposite of responsibility is indifference.
"The hottest places in hell are reserved for those who, in times of moral crisis, maintain a neutrality." (Dante.)
That adage is true not only with respect to times of moral crisis. The entire sova way of life requires pro-active, internally motivated and self-initiated conduct as opposed to the selfish way of life that responds to external threats of starvation and predation, and absent those external incentives the actors remain indifferent. The reason autonomy is pre-requisite to adhering to a sova way of life is because autonomy is the basis of that pro-action.
The giving of gifts is an intrinsically pro-active behavior.