Maybe even more so. That definitely means the brush isn’t getting to those places. Decay and tartar can get in those places very easily. A water pick is also very handy, especially below the gumline. 

Brush once in the morning and at night and floss every night.

Bad breath is mostly caused by what you eat (especially in the morning). Dairy is a common culprit. Probably ask your dentist.

In general regular cleaning immediately after eating/drinking anything is more important than what exact cleaning process you use.

Never.

No. Just no. I don't and I haven't.

When it feels like I need to floss, usually two times per week. I just wait for that. Maybe more around meaty meal times, I often floss after a steak or some chicken.

You'd be surprised what ends up on that string. Honestly. You should. 

Degenerate

YES! You need to. I have no gaps but what ends up on that string is surprising. Please floss. 

Exactly. Same as you.