Arguing at Work

I've been getting into a lot of discussions/arguments at work recently. Right there's least three 'fronts':

1. We've released a product and I'm not happy with many aspects of it
2. We're planning our future internal projects and I'm not convinced of the need for some of them
3. We're redesigning some core software components and there are many opinions for how they should be implemented

In all these arguments I'm finding that I'm too aggressive. I have an excuse: I've been writing code for most of my life, and I'm never satisfied with poor designs. I know I sound patronising, up-myself, etc, but it's true - I struggle to accept code that's not right. But is this acceptable for a work environment?

I've been struggling to balance this desire for "perfection" with the need for good working relationships. In recent days, I said something to the two people I work closest with, something that applies to everyone:

If I become too much of a pain-in-the-arse to work with, let me know.

It doesn't seem to be all bad though. I said to one workmate, "I know I'm too arrogant"; he replied "No, you're not arrogant, because you're happy to hear criticism of your own work". That is true - I leap at chances to have people criticise my work because I'm never sure that I've been critical enough. I worry that others don't see that at times...

I'm making an effort now to be more 'measured' and 'considered' in my arguing. I'm trying to be more constructive. I'm reflecting on my criticisms, looking for weaknesses in my arguments, and discussing them with less passion. Hope it works.