I completely agree with the quote.
BUT(ha ha already contradicting myself right?).....I believe many factors would have to be in place for it to work as one would hope.
Also, there is an expectation set up in the quote (which to me already invalidates the premise some)
"Wouldn’t it be much better if you and your partner entered a relationship and committed to becoming the best people you both can be while sharing your love with each other?
There is the "expectation" that you and your partner are both committed to ......
No needs, no expectations, no obligations
As shown above, of course there have to be some expectations, all relationships have some base ones or there is no relationship IMO.
Yet, many relationships have expectations that are not necessary to base a relationship on, many people put the burden of their needs on the other, many do things in a relationship not out of love, but out of obligation, I know it is comforting for me to have a partner who is monogamous irregardless of their reason, but wouldn't it be even more "meaningful" if they did it out of a desire for themselves, not obligation to a commitment? Meaning they value themselves and their integrity above all, so no matter who they are commited to they will be monogamous as that is their moral code personally, not just because they "made a promise or said a vow".
I do see (aside from the base expectations needed to form a relationship) expectations, needs and obligations to be limiting and hindering for many. Opportunity can be squelched if one focuses on expectations, needs and obligations to be sure.
Also, I will not be disappointed as much if I do not put those expectations/needs/obligations onto another, because others will let us down, it is just life.
As SadinAZ said, it is very zen, which is all about reducing and eliminating suffering which is done by dropping expectations, stop expecting things in life to be fair, stop expecting if you do the right thing you will be treated fairly/correctly, stop expecting a promotion because you give 150 percent to your job, so when you do not get the promotion, and you are treated poorly you will not have the added pain of the expectation to deal with as well. Do the right thing for yourself, give all to your job because you choose to irregardless of how others react or respond to that, be it positive or negative.