I'm in favor of keeping Amare, for two reasons:
1) Porter is now gone and Gentry is going back to good old run n gun. Amare is much more valuable in a SSOL system, and will look and play much better.
I'm still not sure if Amare is the franchise cornerstone (he has to at least try to play defense consistently going forward - please!), but even if he is not, he will be a more valuable trade option if he plays well the rest of the year. Which leads to reason #2...
2) The 'realistic' trade proposals for Amare right now STINK. If the Suns need or want to trade him, ok, but darn well get good stuff back. The only decent trades were the Portland one with Aldridge and Bayless (apparently never really an offer), and maybe the Memphis or OKC ones, but those were even a stretch.
Kerr should hang up on Chicago if they don't offer Thomas, Gooden, Noah, Thabo and their unprotected 09 pick. Heck, he should hang up on even that offer until they call back and offer up Hinrich in some combo deal. Seriously.
Bulls fans are SALIVATING right now about getting Amare to pair up with Rose. Like, freaking out. Paxson has consistently gotten cold feet the last few years on blockbuster trades (KG, etc), because he overvalues his team and lowballs the other teams. And shockingly, he has not made any blockbuster trades. Of course, this did finally net the Bulls a bad enough season to draft D Rose, so it is not all bad.
Anyway - no trading Amare for crap. If a really good deal comes before the deadline, maybe you take it, but only if it is a 'blow me down' deal - expirings, some really good young talent and high draft picks. Not 2 of the 3 - ALL THREE.
Otherwise, keep Amare and roll with the current team for the year. See where it all goes and make decisions in the summer when you have time to plan and think.