Why did the framers of the constitution allow only the house to introduce spending bills?

The framers of the Constitution granted the House of Representatives the exclusive power to introduce spending bills to ensure that taxation and government spending would be closely aligned with the will of the people. Since House members are elected every two years, they are more directly accountable to their constituents, making them more responsive to public sentiment regarding fiscal matters. This design aimed to prevent the Senate, which has longer terms and a different constituency, from exerting undue influence over financial legislation. Ultimately, it reflects the framers' intent to promote democratic principles and accountability in government spending.