Re: extended warranty ?
Risk/reward my friend.  I'm like you.  I usually don't and let me explain why
Last 5 big purchases:
52 Panasonic TV ($3500).  Purchased the extended warranty.  Never had an issue in the 10 years I've owned it.
SLR Camera ($2000).  Purchased the extended warranty.  Never had an issue in the 10 years I've owned it.
Digital SLR Camera ($2000) Purchased the extended warranty.  Have had it almost 3 years, never an issue.
INSERT KNOCKING ON WOOD:
31 ft travel trailer ($25,000)  Didn't buy the extended warranty.  2 years old.  Extended warranty was additional $2200.  No problems.
55 inch Sony TV ($3000)  Didn't buy extended warranty.  2 years old, no problems.  1 year warranty up but the expensive parts to replace just got a factory extended warranty until June 30, 2010
I'm saving my $$$ and taking the risk.  If I need to replace/repair something, I'll chalk it up to you win some and you lose some.  I guess I gamble.  Hopefully it'll continue to pan out.