Aragorn - Orphan, mom dies after bringing him to safety in Rivendell. Has to lead a war and really put his life on the line, can't have mom worrying at home. Elrond is more like a guide, loving but knows what must happen and prepares him for it. No sheltering. A mom is too involved.
Actually, mom kinda did the worrying at home. Gilraen brought Aragorn to Rivendell in 2933, when Aragorn was 2. She died in the year 3007, 27 years after Aragorn and Arwen got engaged on the hill of Cerin Amroth, and 56 years after Aragorn started his great travels and labours against Mordor. And Elrond did kinda shelter him : Elrond became a father for Aragorn and raised him as his own son. They loved each other dearly. ("don't i have your love too, Estel?" "Yes, dada")
Now that i think of it, in the movies Barfagorn uses the line "Onen-i-Estel Edain, u-chebin estel anim". This is the line Gilraen speaks to her son before Aragorn leaves and sees his mother for the last time. Nice blasphemy from PJ again.
But indeed, Aragorn's daddy was killed by trolls when Aragorn was 2.
Bout Arwen's mother : her mother left for Valinor in the year 2510. At this time, Arwen was 2269 years old. So i think she had time enough to get to know her mother quite well, and that her mother had a thorough influence on her daughter. Same with the twins.
Bout Boromir and Faramir : yes, Finduilas died when Boromir was 10 and Faramir was 5. They didn't get to know their mother quite well, i guess. But still a long time before daddy lost all hope (he didn't go mad like in the movies, well in the movies he was kinda mad from start to finish). And if Finduilas wouldn't have died at an early age, i think Boromir would have become a different man than the Eärnur he became. But that's just opinion, i am talking facts. *cough*
Gandalf didn't have parents, of course. And wasn't allowed to marry or would want to get married of course : he had more important stuff on his mind than doing the dishes.
Sam's mother is dead, yes, but the Gaffer is already very old when the whole ring business starts, so i'm sure he grew up in a normal family too.
Well, all the rest of the fellowship had normal families too, but safe for Pippin and Merry they didn't do anything important (i am talking to you, Legolamb) so who cares about their family life.
At least we can give Gimli the credit for winning an Orc-whacking contest against Legolamb ànd pulling Pippin from the underneath of a troll.
There is definitely a lack of good female characters in LotR. I wonder what Tolkien's experience of women was like?
Well, it is Lord of the Rings, not Little Women. Besides, Eowyn is a very good female character imho. Every fantasy author after JRRT kinda duplicated her (together with the entire LOTR story hahaha)
Arwen only says two lines in the book, but i guess JRRT makes up for that in the appendices. And well, i'm thankful that female characters like Ioreth and Lobelia Baggins were NOT developed. I have the impression that once those ladies'd talk, they wouldn't stop talking.
And about JRRT : he met his wife Edith when he was 18 but wasn't allowed to meet her again until he was 21. They married during WW1. He loved his wife very much. The Beren-Luthien and Aragorn-Arwen romances from the books are based on his own experience.
Give up the Halfring, she-elf...