This is a complex question which I once committed reproductive suicide with in regards to a woman I was very much smitten with. Anyway, with that said I think there are other ethical considerations besides suffering
Such as
- aesthetics
- authenticity and living in accordance with nature (or the perception thereof anyway)
- unknowns.
Coming from the perspective of someone who's family (even if extended) has hunted since before I was born, I find the notion that we should just cease eating meat because it inflicts suffering to be fundamentally unconvincing, diplomatically put. Most European cuisines are based around meat, fish or dairy and the reality is that food is a large part of who you are as a person, at least it is that way to many. Sure, I can appreciate Chinese food, but it's not the same as a nice bit of reindeer with lingonberry jam and karl-johan mushrooms. Even though Japanese food is tasty as well as aesthetically appealing it's also just not the same to me, even though I can definetely appreciate it. Indian food can be extremely tasty, but it's aesthetically entirely dead to me. I have no doubt many people would say the same about the cuisine from their country etc.
I think it's perfectly legitimate not too eat meat if one chooses to, and I respect people who take that decision and really go with the principle. But then of course, the same people should also try to not cause suffering in other fields of life, and do their best to live as buddhist ascetics, lest risking hypocricy. Some are thorough this way. Many don't seem to be.
Another aspect which I think is not often considered is the long-term societal effects of encouraging vegetarianism/ veganism, especially in societies where that is not the norm historically. Sure, people can do what they want on the individual level, but any society has norms. If your society has had it as a norm to eat meat for over a thousand years, and you suddenly stop because a lot of people suddenly find it offensive for what is essentially religious reasons, then that society has likely undergone a profound cultural change in values more generally. What food we are socialized to eat are one of the earliest markers of identity and things that shape us at an early stage of our lives - I would wager. It is nonetheless irresponsible to socially engineer mass behavioural change in the way some vegan and vegetarian advocates argue, for the simple reason that we can't really know, can we? People can choose to become vegan or vegetarian when they grow up, parents who raise their children vegan is not something I'm terribly sympathetic towards.