Simple, $34k overseas spend gives you enough miles for a one-way suite ticket to Europe. 3% is a fee of about $1000, the ticket costs $10000. So for the price of an Economy ticket, you get a Suite ticket.
Of course it is everone's own decision if SQ suites are better than Economy or not. There is always a trade-off.
As we all know, SQ is famous for their very attractive flight attendants, but this is not the case in suite class. On my last suite class flight I had three rather unattractive male flight attendants...!