The abolition of discharge by purchase in 1953 was influenced by several key reasons:

1. Equity and Fairness: Discharge by purchase allowed wealthier individuals to buy their way out of military service, which was seen as unfair to those who could not afford to do so. This practice created a disparity between social classes, undermining the principle of equal service.

2. Public Sentiment: There was growing public discontent regarding the practice, especially in the context of post-World War II Britain, where many felt that everyone should share the burden of military service equally. The sentiment was that service should be based on duty rather than financial capability.

3. Military Needs: The military recognized the need for a more committed and cohesive force. Discharge by purchase could lead to a lack of morale and commitment among troops, as those who could afford to pay for discharge might not be as dedicated to their service.

4. Administrative Complexity: The process of managing discharges by purchase was administratively burdensome and complicated. Abolishing it simplified the discharge process and allowed for a more straightforward approach to managing personnel.

5. Changing Military Policy: The post-war period saw a shift in military policy towards a more professional and volunteer-based force. The abolition of discharge by purchase was part of a broader move to reform military practices and ensure that service was based on commitment rather than financial means.

These factors combined led to the decision to abolish discharge by purchase, reflecting a shift towards a more equitable and effective military service structure.