"Lifetime commitment" means dedicating oneself to something or someone for the rest of their life. It implies a long-term and lasting obligation or responsibility that lasts until the person's death. Full definition
If you have 40 years ahead of you, I would like you to consider a major lifetime commitment to small cap value. (paulmerriman.com)
Don't give up at the first setbacks — work towards lifetime commitment. (childdevelopmentinfo.com)
We ensure their safety and comfort, strive to alleviate their suffering and work to place and keep them in homes that provide a responsible lifetime commitment to them. (countdown2zero.org)