Mr Chen,
Don't despair or take anyone's comments to heart
You do whatever you want and I will add some comments since Trilobite mentioned my name and choices.
I also have been reluctant to share personal choices but have done so more the past year. I watched many many divers "chase gear" and be encouraged that "more is better" philosophy and yet wasn't sure folks were enjoying the simple joy of diving
I will say underwater hunting as long as you're discerning and eat what you spear or catch is fine. I don't participate but don't criticize responsible hunters.
As to UW photography / videography here's text I posted on
www.waterpixels.net with a few pics from my recent Bali trip:
Complete thread with pics:
Bali24 Dive trip and thoughts
Farther down thread comments I think fit this discussion:
I sold my Canon G7X II camera for an insane $$$$ as soon as I returned home.
It seems "young Vloggers" think the Canon G7X II (debuted in 2017 for around $650 USD) and the Canon G7X III (debuted in 2019 around $749 USD) are simply the coolest thing going. They shoot what I think are totally unflattering full flash portraits of themselves and friends, but hey, whatever you like is fine with me!
The G7X III added 4K video and couple other features but not Phase detection AF like Sony's RX100 V / VA / VII models.
It seems these Vloggers WOWWED by these little cameras have driven prices up for cameras that are even discontinued !!!!!
I don't have a trip coming up for a bit so can sit and wait until used prices come back down. I've bought and sold cameras over the past 2-5 years and am comfortable with clean used items.
I still own two Fantasea FG7X II housings and Air Lenses and set for whatever my next move is.
I also sold my last Inon S220 strobe to a fellow compact shooter who wanted a 2nd Inon S220. So I'm totally "strobeless". I may shoot only wide angle ambient light B&W or color in my remaining days diving. Or just go diving!
It's been 55 years blowing bubbles and I'm fine with my imaging decision........
Being totally lazy about traveling light and obsessed with my "less is more" philosophy your choices should satisfy you and you alone....
As long as you're enjoying the underwater world I hope all travel and shoot photos or videos if desired) whatever you like too.
I plan on that approach
DH