Good point. Bringing a dog certainly changes any activity, although to many people this is not a bad thing. Is some ways it is similar to bringing children with you - you lose some of the carefree attitude but gain a companion.
When riding in busy areas or on the road, you have to keep one eye glued to the dog at all times to avoid bothering others or endangering you or the dog. However, in quiet areas or back inthe widerness, dogs can oten be left to run free and simply follow along, sniffing and peeing and chasing squirrels.