Quite a milestone, wouldn't you agree?

Question

I hope this one isn't too easy.

I'm the second of the first, but also the first of the inferior.

I'm the end of belief, but the beginning of faith.
I'm hidden in a field, but not in a meadow or farmland.
I'm the start of a name, the last of the unknown.
I'm found in victory, and in failure.
I'm found at the start, but not at the beginning.
I'm found in all questions, who, what, where, when, why, and how.
You'll see me twice in your eyes, though I am not sight.
I am done, down, and depleted.

They say there is no 'I' in team, though I am the last member.
I am the question of the universe, the one most commonly asked.

I'm dangerous if you're allergic to me. My buzz will surely bother you.
You'll see me if you're surprised. After all, I'm your reaction.
You'll say me when you've been told an answer you should have known.
You'll text me when a friend tells you something you don't care about.

What am I trying to say?

Answer 1

I found the answer

I Finished My Book

I'm the second of the first, but also the first of the inferior.

I

I'm the end of belief, but the beginning of faith.

F

I'm hidden in a field, but not in a meadow or farmland.

I

I'm the start of a name, the last of the unknown.

N

I'm found in victory, and in failure.

I

I'm found at the start, but not at the beginning.

S

I'm found in all questions, who, what, where, when, why, and how.

H

You'll see me twice in your eyes, though I am not sight.

E

I am done, down, and depleted.

D

They say there is no 'I' in team, though I am the last member.

M

I am the question of the universe, the one most commonly asked.

Y

I'm dangerous if you're allergic to me. My buzz will surely bother you.

B

You'll see me if you're surprised. After all, I'm your reaction.

O

You'll say me when you've been told an answer you should have known.

O

You'll text me when a friend tells you something you don't care about.

K

And I think this is quite a milestone :)