Only you can decide if it's worthwhile & cost effective.

I've been shooting large format 5x4 for over 30 years, cost isn't an issue, I don't waste film shooting images I might not use as all my work is project based.

If I was to consider shooting digital instead of large format film then I'm certain that I would need to invest a considerable amount of money in equipment to achieve the same quality, and that equipment becomes obsolete after a few years and I wouldn't enjoy using it.

My film costs (for personal work) have never been excessive and doing your own processing B&W and Colour greatly helps to keep costs manageable particularly for colour work.

Ian