I was sad to say goodbye to our little class B van this year - needed more room to tote my 70-lb dog around with us. It was the best thing to do and I loved the new layout, but I mourned the good times gone by for a few months.
After the first long trip in the bigger RV, I'm not mourning anymore. It takes a while to get comfortable with the change, re-establish where you'll put stuff and get the flow going.
To everything there is a season and a time to every purpose under heaven. Now you can build new memories!