Same reason I'm ok with the government building a road even though I don't personally drive. It's an economic multiplier. It increases opportunity overall by fa

Same reason I'm ok with the government building a road even though I don't personally drive. It's an economic multiplier. It increases opportunity overall by facilitating more transactions than were previously possible, and the net economic growth can flow back to me even though I didn't directly use it. I'm not universally in favor of subsidies, just in certain specific instances where the economic multiplier is high and a large fraction of the public benefits directly (usually infrastructure).