Believer's baptism is a valid theological position that has been held by many Christians throughout history. As you mentioned, it is a minority opinion compared to those that practice infant baptism, but it is still a legitimate interpretation of Scripture. Baptism is an important aspect of the Christian faith, and it is encouraging to see that you are searching for a deeper understanding of its significance. Ultimately, what matters most is our relationship with God and our faith in Jesus Christ as Lord and Savior.