how far do you sit from your speakers?

I have a few smaller rooms and one larger one. My preference is the larger room where I can sit a good bit back and take things in rather than being more immersed in the sound closer up.

I sit 10 - 12 feet away.
A fluffy (as opposed to hard) blanket on the back wall works wonders.
Also, a chair without a headrest is preferable.

Yes you need to be sitting well away from any wall - 2 feet is a minimum - 4 feet or more is best.

Speakers are (approximately) 6.5' apart and I sit 9' to 9.5' feet away. Speakers are slightly toed-in. These are the general paramaters provided by my speakers manufacturer (Merlin). The wall behind me is approx. 10' away.

According to the Wilson Audio Set Up Procedure (WASP), the listening seat should be in the area of 1.2 times the distance between the two speakers. For instance, if the speakers (measured from each tweeter) are 10 feet away from each other, you should consider sitting 12 feet away from each speaker. I hope this helps.