I'm thinking of giving up on our friendship
What makes you want to give up on the friendship?
You've been traveling too much and it's hard for me to get in touch with you.
Sometimes you grow apart in certain friendships and you find it difficult to connect with a person. If you distance yourself from the friendship on a positive note, you may be able to reconnect at another point in your lives.
There's no point in being friends anymore.
Ending a friendship can be difficult, but if you know the friendship is more draining than rewarding it may be time to release the connection. It's best to do this on a positive not so that there is negative energy between the both of you.