“I didn't like InfoPath when it was first released, but over the years I have really come to value it, mainly for its versatility and integration with SharePoint.
I am not surprised to see it being retired though as, with the exception of a minor tweak in color, there was not a single change in InfoPath 2013.
Whenever we do an InfoPath project we always recommend our customer to archive forms in MS-Word or PDF format. We have used the Mohimbi PDF Converter for SharePoint to automate this process, it does a pretty good job when converting InfoPath forms and attachments. They have a blog post up at http://blog.muhimbi.com/2012/02/convert-infopath-to-ms-word-excel-xps.html
Keeping my fingers crossed that there will indeed be a robust upgrade path from InfoPath to whatever tool will replace it. I am not holding my breath, but one can have hope.”