thinking about it in a broader sense (not purely from the angle of it being love for other human beings), going about living in the world without the ability to love experiencing or doing anything would be hellish, yes (there are a lot of things one can love, so it's hard for me to get into specifics). as for love for others, or just romantic love, it's extremely debatable; in some cases it can be more hellish to love (negative experiences, heartache etc.) than have the ability to love in the first place