What sort of dog have you got snuffles? We used to put our puppy on the floor of coffee shops you have to weigh up the very small risk of the dog contracting a bug vs the much bigger risk of having an under socialised, fearful dog. For me it's a no-brainer, if you're in quite a rural area then I would be making every effort to get him used to people and places otherwise there will be a real risk of him not coping outside of your little bubble.
I hear you though re being overwhelmed. I think I made it to two weeks in before having a complete breakdown, sobbed on my bed that we'd made a massive mistake. Our puppy wasn't even that bad really!!
It does get easier, we're at the 6 month mark now and I'm really enjoying him. He's slowly getting the hang of walking and enjoying the walk, the biting is less, the toilet training pretty sorted, he's very friendly and so far not been phased by anything we've thrown at him. We can also now leave him for 2-3 hours at a time.
I can't imagine not having him now!!