Good point, UAPremExec. Now that I'm home and off work, I had a bit of time to process things & I think it's better to stick with Singapore Airlines & inch ever closer to *Gold rather than go for the UA bonus miles. The bonus miles will only get me a 1-way economy ticket that's worth $100, $150, $200 maximum. It's not worth that much to me. Whereas if I have status, I will have some tangible benefits that I will always get to enjoy. Therefore, why not keep doing what I'm doing? No big deal.
And the increased difficulty of redeeming SQ miles just means that I will be a hoarder! YAY!