Please tell me what the difference is?

What's the difference between 1 and 2?

1 I don't want his death to have been in vain.
2 I don't want his death to be in vain.

1 He's of a lot of help.
2 He's a lot of help.

1 Do you paste it that/so close to the edge?
2 Do you paste it that close from the edge?

Is this correct?
I haven't wanted to watch a movie this badly in a long time.

Thank you so much