That's a feature, not a bug, of term life insurance. That's the tradeoff you're making to get coverage now at a cheap rate. But of course, the option value exists on both sides - so if you want to lock in relatively lower rates, well, that's why whole life insurance exists.

Yes, good point. I actually looked into getting whole life insurance but the policies contained so many bells, whistles, and other confusions that I put it all on hold until I had bought some term insurance. Maybe I will look into that again.

Of course if I were disciplined, it would probably make sense to just "buy term and invest the difference" for the next 30 years.