Riley riddles galore!

Question

My new 'Riley riddle' is different:

Where my prefix is getting something from you,

Here my suffix makes food last longer,

You think my infix is on edge,

Underthinking it is not what I do.

+ Think it through

Answer 1

I'm going to guess:

Consideration

Where my prefix is getting something from you,

Con - A person tries to con you out of money or something valuable

Here my suffix makes food last longer,

Ration - Rationing food makes it last longer.

You think my infix is on edge,

Side - A triangle has 3 sides, three edges. Side of the road, edge of the road, they're pretty synonymous in some cases.

Underthinking it is not what I do.

If you give something consideration, it means you're thinking it over thoroughly.

+ Think it through

Give this riddle some consideration.

Answer 2

How I haven't seen this one yet I'm not sure; but to begin breaking this down, the acrostic is:

WHYU $\leftarrow$ In which I believe the WHY is the only relevant portion.

Where my prefix is getting something from you,

I think this could be a literal statement in which we get a letter or letters from you. So the answer to this could be y, o, u, yo, yu, oy, ou, uy, uo; however, the only ones that make sense as a prefix would be y, o, u, yo, oy. Due to the acrostic containing a U I believe the letter is most likely U as it is what I would do; the letter U is difficult to use unless you're trying to ensure its usage as a hint, just like the letters Q, V, X, Z.

Here my suffix makes food last longer,

You think my infix is on edge,

I think the infix could possibly be e following the same concept as the prefix. Words that are synonymous to on edge are tense, excited, wired, nervous, eager, impatient, edgy, etc... and I believe the most likely words would be tense, eager, antsy, or edgy.

Under thinking it is not what I do.