OP, I can understand you feel frustrated by your husbands passivity.
Has it occurred to you to consider why he is so passive and introspective? He had an addict father, a mother with mental illness, he probably grew up in a house with constant shouting, dramas and emotional turmoil. His way to cope, his learnt behaviour, was to be self sufficient and introspective. For him letting go of that would be difficult and traumatic.
Your description of yourself is quite illuminating, forgive the pun, as you state you are the one that has the sparkle, likes witty banter and wants to engage in arguments for fun. To your DH arguments are not for fun.
Perhaps consider not only your good qualities and appreciate more of his. You may want to manage your expectations. He hasn't changed over night, he was always like this.
Look back to the past for things you like to do together. You say previously you liked to travel, you can again now the kids are older. You could look to plan future things together to enjoy things together, so your travel planning is a joint venture with a common goal.
And please, do try to avoid shouting I know it's not easy, and goading "grow some balls" type comments, he's probably heard it all before from his parents. It's not good for DH and doesn't make anything better.
Good luck, hope it works out.