We'Ll See

The phrase that annoys me the most is "we'll see..." Can't I just have the gurantee? This phrase is the cause of most of fights that takes place. Because this is a neither yes and nor no case. The phrase just hangs in there which leads to over thinking. It might help postpone the decisions in the beginning. But we all know how horrible are decisions made in a hurry. They always leads us to worry. But it's really easy and stress free to say this phrase. You don't have to be anxious about the coming days. You can avoid conflicts for a short time and 'we'll see' in the time ahead. Most of us just want to live freely till the end. So should I let myself loose or face the troubles? Can anyone please help me with these struggles?