I just got the Crossfire myself at the age of 60. 5 years ago and a bit it had never even entered my head about them, I was fit, averaged 16mph without too much trouble and loved my cycling, Health issues then come into play and now osteoarthritis , while its been better since I've taken dietary measures etc, tonight for instance my hips ache deeply. There's been a few times in the last year I've nearly thought of jacking it all In, there's little appetite to cycle when you just plain ache.
Last year I commuted 14 miles each way maybe twice a week during the summer but arriving hot and sweaty...this week I commuted twice on the ebike and yes, it's not a free ride but you arrive feeling so much better but have still put some effort in.
That left me fresh last night for a quick 15 miler on the road bike, quite fast for me at the heady average of 15.5 mph

...best ride I've had in ages.
It's expensive, but it just might have saved me from a life of no cycling the way things were going!,
Love the bike (Crossfire) it's smooth and feels very nice under you. Heavy, but that's forgotten as soon as you get going.