Many Sikhs choose not to get married. Baba Buddha Ji, Bhai Gurdas Ji, Baba Deep Singh Ji, Sant Isher Singh Ji, Baba Thakur Singh Ji. It’s not an obligation for a Sikh to get married. Maharaj has supported a Grihasti Jeevan, but no where have they made it mandatory. Some Mahapurakhs solely don’t get married so that they can dedicate every nimakh to Prabhu Pati Parmatma. Another reason which Baba Ji themselves said in 1990 was that they were not going to marry because they were going to leave their body before the age of 40 and it wouldn’t be fair to leave a Singhni and children.