I just LOVE them since we acquired our miniature JRT Gemma (Little Gem). We've been won over by her mischievous and intelligent ways and the unconditional love she shows to us. She also loves EVERYTHING in the world - other dogs, people, children, animals, you name it! 
Most other people we meet are also in love with their own particular JRT but we do come across a few who regret getting one.
Have you ever had one and what is your view on the breed?