1.) 1e is random, and its weighted against your PC.
Take a look at character generation. You roll 3d6 (getting a 3-18 split, heavily weighted toward the middle 10-12) for scores. By strict reading, those rolls determine your class (primes and requisites) and race (racial min/max) even your gender (min/max)! You rolled starting hp (leading to magic-users possibly having more hp than fighters!) and starting gold (possibly not even enough to afford good armor or weapons!) and magic-users rolled starting spells (via two contradictory methods, one in the PHB, the other in the DMG). If you were dice lucky (or a horrible cheat) you got the PC you wanted and he would survive the grist mill to greatness. Else, you got to try again when that less-than-stellar PC met his end.
However, it never worked this way in
practice -- this is what a lot of people seem to forget. Many -
most, I would say - changes in subsequent editions come from the fact that people are already playing the game that way.
I've played D&D since roughly 1977. I played under dozens of 1E GMs. I have never rolled strict 3d6-in-order. It was always either 4d6-drop-lowest, or the GM had some special way of rolling stats. [An example I remember was a guy that had a chart for each race and what they rolled for stats. Humans were 3d6 + you had 1d4 discretionary points to put anywhere you wanted. Orcs had Str on 4d6-2 and Int on 1d6+6, etc etc].
I have never had a GM tell me I couldn't play a race because of my stats. If I really wanted to play an elf, then if I had a stat under the minimum, it became the minimum. At least. Or just re-rolled it.
I have never played in a game where hitpoints were not max at first level since... mm, 1977. In fact,
many games I played in used your CON score as your first level hit points, purely to boost first level survivability.
That first couple times your mighty fighter dies after failing to clear a garden gate because he had 2 hp and the fall was 1d6 damage might be funny.. the first couple times. Then it gets old and people start looking for better ways to handle this problem. This is what happened.
Many but not most games had you start with max starting gold. Again, it's funny when you roll so poorly you can't even afford a sword or decent armor... the first couple times. After that, again, it's just old and tiresome.
I've never seen a magic user roll for spells; they always picked what they wanted at first level. That silly idea where you rolled to see what spells it was
possible for you to know? I never knew anyone who considered that anything but stupid, and that rule was ignored.
1E wasn't nearly as random as some might like to say, not in practice it wasn't.