should it be 50-50?

In an ideal world maybe, but your dating life will be better if you don't keep score. Instead, try to cultivate a habit of always looking for date opportunities. Keep a list if you have to. (I did.) Living in a way that you always have a suggestion ready will be better for you than trying to enforce some even split.

If you're a man looking to date women, you should be prepared to take on the greater share of outreach and date planning. This might seem unfair, but it's the result of diffuse attitudes and habits and it won't change anytime soon. Use this as an opportunity to become more engaged with your world.

When you're settled into a relationship, things might even out more. My wife suggests as many outings as I do now, even though I was the main planner when we met.