While I partially agree with this, as familiars are supposed to exist basically forever when you cast the spell, until they perish, or you dismiss them, remember, in d&d 5e, Find Familiar is only a level 1 spell. Familiar's can't talk in most cases, unless you're a warlock with a specific build (Something the game doesn't have implmented, you need to be a chain warlock to get special familiars that are capabale of. speech and more complex tasks)
I do agree that familiars should be able to do more things however, as what they can do as of now is rather...lacking. Most of them have the ability to attack, which I think should be removed, as in 5e, Familiar's specifically cannot do this. What they can do is deliver touch spells, something which would be very interesting to see if they could incoperate into tha game.