Left wingers don't remember the long painfully slow recovery with all the government growth and spending. Arguing military size is one thing but the government does much more than that.
Governments that aren't spending trillions of borrowed money on war, have money to spend on their people and their infrastructure. Governments which haven't spent the last 10+ years at war, are balancing their budgets.
Countries which put people ahead of corporations, have healthier economies.
Your corporations and oligarchs are awash in cash. They've never had more money than they do now and yet it's not enough. The people have no savings and few investments. Americans are mortgaged to the hilt and their credit cards are maxed out and that's not enough for the right.
You encourage people to go deeply in debt to get a college degree but saddling the next generation with student loans it will take the next 20 years to repay means they won't be able to buy homes or other consumer goods to keep the economy moving.
Everyday working people need jobs. Shipping manufacturing overseas helped corporations bottom lines in the short run but is killing the economy in the long term.