After all—
1. is used to introduce an additional point which supports the previous statement.
- They did not expect heavy losses in the air; after all, they had superb aircraft.
2. in spite of what had previously been thought or done.
- It had to be recognized, after all, that I was still a schoolboy.
After all is said and done—when everything is settled or concluded.
- After all was said and done, the wedding was a lovely affair.