I am in no way here to "show off" to anyone.  I put my two favorite watches in the Avatar which as you say is a Blue TT Sub and a SS white Daytona.  I have others that I rotate daily for a little bit of a change.  The avatar is there because I run a watch forum that has been active for several years so I kept the same avatar everywhere I post.
If people enjoy working on their own cars I have no problem with that.  When I was 21 I had a Mustang and I loved doing everything on it myself.  You can call it preaching but all it is is me showing frustration when people buy a luxury item and then complain about maintenance costs.  We get it all the time on the watch forum.  Someone will buy a $10,000 Rolex and then get bummed out when he finds out the price of insurance and that they need to be serviced for 4-500 dollars every several years.
The point I am making is that if you really want to save money in the long run and pay the $19.95 oil change then a Toyota Camry or the likes are great vehicles to own.  The fact that you are 34 and own your car is irrelevant to the argument.  I am 26 and own my cars too, so what?  We all own our cars I assume.  Who modifies a leased vehicle?
As far as my business goes, I don't publicize it on forums because I am not here for business.  I am here for enjoyment.  I answered because someone had some questions and concerns which I was able to address and I wanted to help.
I'm not here to fight with anyone.  I am here to read posts relating to a car I own.  If you don't like the nature of my posts then between my Avatar and signature photo they are very easy to pick out in a crowd and simply skip right over them. 
P.S.  I guess "Livin' Large in Houston" is a very modest statement. 
P.P.S.  I stopped collecting comics in the 80's but thanks for the link.
Cheers!