Frodo and Bilbo

[ElanorGamgee]

It seems to me that both Bilbo and Frodo were somewhat anti-social, or, when they did socialize with other Hobbits, spent time with the younger crowd. They seem to have been looked down on by the "proper," older, more traditional Hobbits. Maybe they were isolated from most female Hobbits in their age group and this contributed to their bachelor status.