I'm losing my patience and I'm not going to wait for my friend anymore.
Why would you abandon your friend?
There are so many little things to do.
It's not nice to give up on your friend and just leave. People might find you selfish if you just leave your friends behind. You should try and be more considerate of them.
I trust them. I'm doing what I want to do. Besides, it gives them a chance to catch up.
I get you may have a lot going on currently, but your friend is relying on you to wait for them and it may be difficult for them to catch up. If you end up abandoning them they are going to feel very betrayed by this. It's not worth losing a friendship over.