Hello DanFrez,
You have to understand that the admins have lives outside of MG. Most of the
admins that are hired are older and therefore have more responsibilities in life,
which is why they are mature (most of them anyways). They try to come in as much as possible but sometimes things come up. If you really want the server to stay healthy you can take proofs of the rule breakers/hackers via Screenshot or Screen Recording software then report them here on the forum. I can assure you that a admin will take action as soon as they enter the game and the hacker/rule breaker will have their punishment.
Now to answer your questions:
Q1: Did not get bored. Real life got busy.
Q2: (Question does not apply to me) Applied. Did my time.
Q3: Arnt the players suppose to love the active admins? That's an absurd idea we all have different personalities regardless. Players might not like active admins. Where is this question going?
Q4: We have a inactivity post section on forums for admins.