I thought it had also to do that people will feel a bit safer buying from a supporting member rather than a non-supporting member.
No offense to non-supporting members

. But a possible scammer wont likely buy a supporting membership.
But, if non-supporting members can place wanted to buy ads, a lot of non-supporting members can contact that want-to-buyer and a lot of transactions can be done between non-supporting members.
Would this be the reason that this is not allowed?
How would placing a Want To Buy thread scam anyone? As long as sellers don't send anything without first receiving payment? I still am missing the point.
To be completely honest I can do this now, as a non supporting member.
Scenario,
I see a bass FS in the classifieds call it the AAAA bass. I can post in that thread "Boy I'd really like to have that AAAA bass. Would you trade for my XXXX bass? Buyer says no I want a YYYY bass or cash only. Another TB'er posts I have the YYYY bass you want in trade but I'd like the XXXX bass, lets work a three way trade. Or rather I'll buy your XXXX bass for the amount asked on the AAAA bass. How is this not a way for two non supporting members to conduct a transaction?
I've seen the three way trades happen. Not to mention if I am a new Supporting Member I'd have no feedback so as far as the comfortability issue I see it as a moot point, as far as the Want to Buy ads are concerned. Besides not all scammers are idiots, I'm sure there are those out there willing to drop $20.00 to take somebody for $1,000.00.
As I've said before I understand Supporting TB when it comes to placing FS ads or using TB as a place to flip a lot of gear. Where I differ I guess is I see Want To Buy ads as another way for people with FS ads already placed, to point someone looking for their particular item directly.
As it is now I have to comb the ads if I am looking for a specific item, read the ads everytime I visit TB and take a chance on missing an ad placed by a Supporting Member.
What I'd like to See is this;
I'm looking for a XXXX bass
With a XXXX neck
In XXXX Color
I have up to XXXX to spend depending on condition.
If I were a Supporting Member with this item That I am willing to part with. As it stands I have to set my price I'm willing to accept for that Item. By placing a Want To Buy ad and declaring what you have to spend, Supporting Members COULD receive more than they had planned to ask. IMO a Win Win for both parties. Buyer gets exactly what he/she wants and Supporting Seller gets more than he/she had planned to ask.
I guess I just have too much time on my hands
Where have I gone wrong?
God Bless, Ray