It's an old post, but still thought I'd comment and ask if you're planning on Sacrificing this year or not?
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Qurbani is actually meant to be a sacrifice in the first place. We're sacrificing something close to us for Allah. But Feeling compassion and kindness for animals is completely normal and okay. In your case, it's a bit too much for you so you're free to appoint someone else (a butcher or trusted individual) to perform the slaughter on your behalf.
In case of veganism, Veganism is generally considered halal in Islam, provided the individual does not hold the belief that consuming animal products is inherently forbidden (haram) or that abstaining from them is a religious act of worship.
And Allah knows best. I would suggest to ask advice from a good Sheikh or a very knowledgeable and religious Muslim
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