@elma, I have read through all the posts, and I'll admit it leaves you more confused than informed.
I've used both 2WD and AWD/4WD and this is my opinion:
1. Some are even confusing you with AWD vs 4WD. I think that's too detailed for you.
2. AWD/4WD is always better than 2WD in many areas e.g. stability, handling, beating slippery roads etc. Getting stuck in mud will be history to you
3. AWD/4WD will be a little bit (i mean it literally) more expensive to buy and maintain than the 2WD. But this is compensated by the more benefits you will dervice from it.
I MEAN A LITTLE BIT. AND FOR SOMEONE LIKE YOU WHO CAN AFFORD TO BUY, WHAT IS MAINTENANCE, HONESTLY!
4. AWD/4WD is more resale value than 2WD. You'll find more buyers of the 4WD anytime, trust me
5. Fuel consumption for the AWD/4WD is a little higher (I MEAN LITTLE LITERALLY). You can afford this difference, given the benefit you get from the all wheels
6. Once you go AWD/4WD, you will never go back to 2WD. Ask those who have tried, incliding myself.
Buy the car if it is in good condition. Get your mechanic to evaluate it. Good luck.