Well, I would if I could.
We are not allowed to bowhunt here in the State I live in, except rabbits and hares, and with Covid travel restrictions still in place, I still cannot travel to other States where I can bowhunt
But go heavy if you want to, it just plain works. I've never chased the FOC thing, but I love well tuned heavy arrows and sharp broadheads. At the ranges I choose to slip the string, I'll take gains in penetration over gains in speed or flatter trajectory any day.
I run wooden arrows and longbows, have for a lot of years, 850 plus grains in a 75lb bow, 700 odd grains in a 65lb bow, and 650'ish grains in a 55lb bow.
No one will dis-agree that a classic broadside hit through the lungs of a deer is a deadly hit, and a lighter arrow will get that done well, all day, but it's when you might not get that perfect hit that the extra weight/penetration shows its real worth.
While rifle hunting, I've seen our Fallow Deer here (pretty similar to your Whitetail I believe) standing still, feeding perfectly broadside at 80 odd yards, simply turn just as the rifle (a 7x57) went off and instead of the bullet taking the deer just behind the shoulder, it took it just in front of the back leg. Came out just in behind ot the off side shoulder and the deer was recovered not far off.
My point in this? I know deer don't always co-operate and offer perfect broadside shots. I'm not suggesting anyone take risky shots, I will not take a low persentage shot, but even with a high persentage shot, if things do go a tad pear shaped, and sometimes they can, and the hit ends up not as good as initially intended, I know my heavy arrow is going to penetrate very well indeed. And that greater penetration can (and has for me) made all the difference between a short or a long recovery. I want a set-up that will work well even if things don't go quite as planned.
Plan for the worst, expect the best.....
Long winded again, sorry.
I'll be using heavy arrows next hunt, you can bet on it.
Best
Lex