Of course not. It is always your option to serve or decline. Even if you agree to serve you can resign later. If you do quit before the completion of probate, you may be required to provide an “accounting” for the period you served. If you decline to serve (or accept and resign later) any alternate named in the will is typically appointed by the court. If no alternate representative is named in the will or the named alternate dies or is unwilling to serve (or, of course, if a person dies without a will, the probate court will appoint someone to serve as the personal representative.