My relationship advice (which will decidedly be unpopular around here):
It's not all about you. Your personal happiness is not the only important thing and it's not the most important thing.
The most important thing is that you understand the commitment. It's the "through poorer... through worse... through sickness" parts that is most important. Your partner doesn't need you through the good times and the healthy times. It's when your partner gets cancer and has to go through chemo and you two have to go through hell together. That's the important part. That's the commitment.
And if that's too big of an ask of you, just remember that it might turn out to be you that needs the partner. It's better to have a committed partner.
RickiTarr