Why do we act like having a full-time job means a man can't or shouldn't be a full-time minister? Remember the unprofitable servants Jesus spoke of in
Luke 17:10? Worked all day in the field then came back to the Master's house, and continued to serve at table preparing and serving food until the Master relieved them of their responsibilities for the day?
And what of this:
1 Thessalonians 2:9,
For ye remember, brethren, our labour and travail: for labouring night and day, because we would not be chargeable unto any of you, we preached unto you the gospel of God.
Paul and his team worked during the day to provide himself and his crew their funds, then spent the evenings preaching the Gospel.
2 Thessalonians 3:8,
Neither did we eat any man's bread for nought; but wrought with labour and travail night and day, that we might not be chargeable to any of you:
Here again, travailing, that is, working very hard, night and day, so the Thessalonians wouldn't have to financially support Paul and his team.
There was never a time in the traditional, institutional church model where I wasn't working 40-50 hours a week and ministering full-time. While at university I was taking full-time course credits (like working a 40 hour/week job), working 30 hours a week, and ministering full-time planting then leading and growing a church.
It's called taking up your cross. All these men who want to go full-time ministry, or already have, and intend to quit their jobs and expect to be financially renumerated by the church: a question I have for all of them:
Paul laboured abundantly more than you all and did more for the Kingdom of God than you all, and suffered more than you all, and he worked full-time in secular and sacred work, no vacations, no insurance plans, no vehicle stipends, no mortgage payments on a parish paid in full, and did it all his life until he was imprisoned, and you want to quit your job and have everything Paul and his team never had and you think you'll be able to do more for the Kingdom of God if you just go full-time without secular employment?
In weight-lifting, you never get stronger if you don't add more weight. You want to do more for God and be used to an even greater degree than before. Add more weight. Take on as much burden and responsibility as you possibly can. God's glory is compared to weight. If you want to see a greater display of God's glory, you have to let Him add the weight. Easy-road ministry never accomplishes God's will.