Giving to advance Kingdom work is a personal matter between the giver and God. The Corinthians were instructed by Paul to complete what they had started in providing financial assistance to the Saints in Jerusalem who were experiencing hardship. As the Corinthian Believers had abounded in faith, utterance, knowledge, and in all diligence, and love, they were encouraged to excel in the grace of giving also.
Although people's motivations, reasons, and attitudes while giving varies from person to person, all giving should be done to glorify God!