Why would people still use ChatGPT? It's barely free, not that reliable, not the most trustworthy, and now they are popping ads right on my face. Either spend

Why would people still use ChatGPT? It's barely free, not that reliable, not the most trustworthy, and now they are popping ads right on my face. Either spending a good money on the best one, or using the open source models seem to be the future.