I was reading the thread named "Can someone explain what "1st ed feel" is?" and I wanted to share but the thread is very long and what I had to say was not exactly answering the question to the letter.
What I have to say :
I prefer the 1st ed for many reasons.
It has the real demons from real demonology.
It has a spell to summon some.
It has druids and illusionists as separate classes
even in the spells sections (and the druid is my favorite class).
It has a darker and older feel,
even in the way the printing is done,
the pictures look and feel older and
stimulate the imagination more.
It has 6 saving throws.
It is the original version by the very guy who created RPG
or at least D&D (reason enough?).
Subsequent AD&D and D&D are just copies without the feel.
Legends & Lore had pictures in it !!! (duh)
1st ed Oriental Adventures presented ALL-NEW PC classes
and was written through intensive and passionate research
while 2nd ed Complete Handbooks and I hear Arabian Adventures
only had DISAPPOINTING and NO FUN AT ALL
CHARACTERS KITS which are a real RIP OFF
instead of new PC classes.
It has the assassin and the barbarian NOT CHARACTERS KITS.
I could go on and on.
I live in Québec, 80% French-speaking province of Canada and
I've had to order used copies of every AD&D 1st ed book
to individuals in the U.S. cause since we're French here,
less people understand English and the 1st ed had never been
translated in French, as far as I know, so there was no more
copies around even in the used stores but I really wanted
the real one.
Go buy them all before they become an expensive rarity
I am presently re-reading every book from the 1st ed even if
I'm French though very good in English
and I will NOT play another edition.
I can always take a small thing here and there
from the 2nd edition and add it if I feel the need arise
which I don't till now.
Well, finally, I answered the question.
What I have to say :
I prefer the 1st ed for many reasons.
It has the real demons from real demonology.
It has a spell to summon some.
It has druids and illusionists as separate classes
even in the spells sections (and the druid is my favorite class).
It has a darker and older feel,
even in the way the printing is done,
the pictures look and feel older and
stimulate the imagination more.
It has 6 saving throws.
It is the original version by the very guy who created RPG
or at least D&D (reason enough?).
Subsequent AD&D and D&D are just copies without the feel.
Legends & Lore had pictures in it !!! (duh)
1st ed Oriental Adventures presented ALL-NEW PC classes
and was written through intensive and passionate research
while 2nd ed Complete Handbooks and I hear Arabian Adventures
only had DISAPPOINTING and NO FUN AT ALL
CHARACTERS KITS which are a real RIP OFF
instead of new PC classes.
It has the assassin and the barbarian NOT CHARACTERS KITS.
I could go on and on.
I live in Québec, 80% French-speaking province of Canada and
I've had to order used copies of every AD&D 1st ed book
to individuals in the U.S. cause since we're French here,
less people understand English and the 1st ed had never been
translated in French, as far as I know, so there was no more
copies around even in the used stores but I really wanted
the real one.
Go buy them all before they become an expensive rarity

I am presently re-reading every book from the 1st ed even if
I'm French though very good in English
and I will NOT play another edition.
I can always take a small thing here and there
from the 2nd edition and add it if I feel the need arise
which I don't till now.
Well, finally, I answered the question.