If you've managed to evolve a theory of mind (a form of which is a sense of empathy - of distress-which-isn't-my-distress-but-I-can-imagine-what-it-would-be-like-if-it-were) and a moral sense, however, it patently is wrong given that the cruelty involved is unnecessary, therefore if indulged in it's done so gratuitously.
This is a moral value that you have imposed on the World. I can think of several ways of looking at this which at least cast doubt on your assertion and should give you cause to at least be less forthright about it.
For example, a lot of animals can exhibit the signs of distress. I used fly spray on a fly the other day. It got pretty distressed before it kicked the bucket. On the other hand, I saw some beef cattle in a field and they didn't look distressed at all. What about a 20 week human foetus at the moment it gets aborted? Do you think it might be distressed. Where are you going to draw the line as to what distress counts?
Then we can look at what is necessary. It's only necessary to cultivate crops if you think it is necessary that humans shouldn't all die. From the point of view of the biosphere it might be necessary that humans do go extinct.
So, no I don't think eating meat is patently wrong. I mean, it might be wrong, but if it is, the reasons are not quite as obvious as you are painting them.