SpareWheel - How old are your children? Do you have a future plan?
Is your wife planning to work after your children are in school?
Do you work the long hours because you're nervous about your financial security? Or are long hours mandatory in your place of work?
Things will get better. Either your wife will be able to work once the children are in school and you'll be able to worry less about being the sole breadwinner for your family.
Or, you'll continue to work long hours but the children will get older and be less draining and you might be able to reclaim some more time for yourself and for you and your DW together.
If there is no way to change your situation now, then focus on the future.
Do you come rush home from work everynight because your wife demands it or is it because you need to see the children? Could you go into work later in the morning so you see the children over breakfast-time, and stay later in the evenings?
Do you have access to babysitters so you and your wife can have a weekly activity planned that you do out the house, just the two of you, one evening a week?
I hope you are able to find a way to improve your situation or look forward to it changing in the near future