Oh my goodness, no, you do not "Have" to hunt to maintain a happy Vizsla! Yes, they are bred for "hunting", but recall that's a human endeavor. Their instincts honed over centuries are utilized in the field hiking or snow shoeing, etc., the shooting part is our invention.
Your lifestyle sounds fine, you are active and enjoy vigorous outdoor exercise, your Vizsla will be just fine.
Our 20-month old male V is our first, after 25+ years of having Labs in our family. I am not a hunter but do work as a property manager in a 160-acre property. So our V LOVES outdoor activity with particular affection of chasing geese of the property. So I am not a hunter, nor have him trained to hunt. He loves coming to work all day with me and has been a great companion and definitely a change for the mellow state of a lab.
With that said, and in full transparency, I've had to make a number of mental and physical adjustments in having a V in our family. As you well know, they are high energy breed and DO REQUIRE exercise (preferably off leash) several times a day to keep them engaged. If you can accommodate that, then you will be fine. Milo is best when I can run him often during the day and our evening (at home) are much more palatable. And our V definitely doesn't like v=being alone more than 4-5 hours; that's definitely been an adjustment for us as well.
Not trying to persuade you to get one or to scare you away from the breed, just trying to offer insight with experience over the past 1-1/2. Milo is extremely affectionate, is highly trainable, LOVES being around people and has been a great wing man at work with me.
Btw: If you do decide on a V, this forum has been literally INVALUABLE and most all advice given has help me overcome a number of challenges with owing a V!
Bbtw: here's a couple of pics from this morning when Milo was honing in on some geese ready to flush them off the property.....he's awesome.
HTH and best of luck with your decision..............