Unlike Joan Jett, a fundraiser must give a damn about their reputation.
When working with donors and communities, you must develop trust while being more than an expert in your field. You rely on your reputation to communicate your message and motivate the donor. Donors need to know who you are and how you will carry out your mission.
Communication is key to keeping trust. Giving the donors feedback and keeping them informed make them feel comfortable about their gift.
A good reputation is priceless. In addition to having skills and experience, it can help you go a long way.