Applying a consistent process is what gives the population continuing faith in the system. Laws that are universally supported will sail through the process with ease, so what's the rush? Laws that prove to be more contentious, regardless of reason, will be negotiated and refined across small regions--either indefinitely or until common ground can be found.
As an exercise try writing down the name of all the politicians you can off the top of your head. Then consider if you like and agree with them or not. Then ask yourself if you really want an agile federal government.
Thinking only the laws you like will make it to a federal law free of unintended side effect is naive fantasy at best. The laboratory of democracy is working. Please, lobby your representatives, get involved, but don't confuse lack of federal law for malfunction.
However, your insistence that "it doesn't depend on the law" makes me view your whole stance more critically; the answer in complex areas is very rarely "it doesn't depend". There's a bunch of domains where stuff just happens across state lines so frequently that a patchwork would only create confusion. It would be really disruptive if NY made it illegal to drive on gas you bought in NJ b/c NY officials hadn't specifically tested it to confirm that all additives were acceptable; it's easier if we just have federal standards.