The amount of questions that's pertinent to ask will depend on the number of players, premise of the game, and lethality rates of your DM (I'm presuming you're talking about d&d, given your post).
- In any game with four or more players, you can't expect the GM to give individual characters any "special attention" if the party is to get anything done that game session.
- It is safe to assume your hometown's childhood sweetheart and sugar daddy are going to be completely irrelevant in a game where the party starts every new session in a different part of the map.
- If your GM is gygaxian then any form of attachment to your character is folly. There's a reason why players didn't bother naming their characters until lvl 3 back in the #BadOldDays
Alas, the amount and nature of the questions in that post are only fitting for a city game with 2 players at most, and a rather laid-back DM. Bringing a three pages long bio sheet to a beer&pretzels game is not only a waste of your time, it will get you chastised as a Special Snowflake. Don't be "that player."