2wd can work in certain situations and especially in areas such as Moab with extreme traction when you take the trouble to install a quality limited slip or locker to take the advantage of the traction in the area.
On all other surfaces it is up to you according to what you are willing to burden the rest of the 4wd group you are with. You can have a blast and get stuck a lot and make me "eat my words" on what you are willing to do. But what I will be thinking about while you are "impressing" me is how much more fun I could have been having in my
4wd that day instead of spending it strapping you all the time while you were "getting stuck a lot".
On surfaces like the rock of Moab a 2wd can make it and present a phenominal performance. On most other surfaces it will slow down every other participant in the run you are on because they have to ignore the fun they were going to have in order to help nursemaid you along while you are impressing them with how well your 2wd performs.
Most major runs I have participated in required me to plan vacation time and/or lost wages plus several hundred or over a thousand dollars in fuel and hotel and etc expenses. If you budgeted and planned several hundred or a thousand or more dollars to enjoy a great scuba trip to the Bahamas it would not occur to me to invite myself along with you without scuba certification and then bring only a snorkel and then expect you to share your tank with me and "help" me to join you. Yet twowheelers who consider themselves fourwheelers seem to expect that exact same treatment.
Why? Because they can do that because we won't say a thing because we are the best extreme sport participants on the earth and we will do it no questions asked. But that doesn't change the fact of the sacrifice we make unsaid in order to nursemaid those who didn't invest what we did and then prevent us from full enjoyment of our sport by forcing us to forego our run to save those who didn't belong with us in the first place.
Short version of my view; I'd love to see you join us and get hooked on the sport, but if you are truly interested in doing it, then
do it. That means if you want to 4wd, then 4wd. If not, then don't.
This oughtta get this thread heated up, have at it fellas