If you were filthy rich...

[Queen Victoria]

I'd own an old house with many rooms and a great security system and a full-time housekeeper. 
I'd hire a security guard/companion for the Princess Royal, ensure her future economic needs.
Hire a secretary to manage my "life" and filter out the kooks and their requests
Turn down invites from society and rich folks since I'm not like that
Give some people I like some nice gifts

Wait a minute, I'm Queen Victoria, this is my life   

.... yeah, I've always wondered what you were doing here when you had all that money and lavish lifestyle.

We are honoured with your presence!

One does what one can to please my loyal subjects.  I am honoured to be your humble Queen.  Quick Lady Weeble, the Peasant-Away Spray.

[Scrapheap]

... I'd drive this! 

[Osensitive1]

I would be a free person. Free from medical bills, free from guilt about having to rely on my parents, free from physical limitations, and free from always needing to plan ahead. Free and happy.

Yes. Free from worry, similar to what I was thinking. Not a material person, so can't see myself buying too much.

[Queen Victoria]

... I'd drive this! 

That would make a lovely royal coach.

[Callaway]

I would be tempted to buy my daughter's school or maybe better yet start an even better one for her right here so she didn't have to travel so far.  Also, I would probably hire a housekeeper.

[Charlotte Quin]

I'd finally move out of home

[Natalia Evans]

I'd buy a nice house up on the hill in a nice neighborhood and I wouldn't have to worry about budgeting again. It takes me years before I run out of money. I'd be able to have more kids too and buy a mini van and try and adopt.

[Callaway]

I'd buy a nice house up on the hill in a nice neighborhood and I wouldn't have to worry about budgeting again. It takes me years before I run out of money. I'd be able to have more kids too and buy a mini van and try and adopt.

How many kids do you want?

["couldbecousin"]

I would own lots of properties and businesses but the people at them I would let them think I worked for the owner

There's a show about that, called Undercover Boss.   

["couldbecousin"]

I would be a free person. Free from medical bills, free from guilt about having to rely on my parents, free from physical limitations, and free from always needing to plan ahead. Free and happy.

Yes. Free from worry, similar to what I was thinking. Not a material person, so can't see myself buying too much.

Me neither! Like parts, I would keep my wealth secret from most people who knew me, and I'd probably keep the same small apartment,
and I might also be a volunteer dishwasher at a soup kitchen just to stay in shape and keep doing the work I enjoy.   

[renaeden]

I would go travelling and meet people that I know on here. Satisfy my curiosity. I would like to buy a townhouse.

[Diesel]

A very private one.  I would have lots of land and workshops for my tinkering and experiments but few if any employees.  Few would know I had money.  I don't think I would act that much different than I do now except for being able to get what ever I wanted  

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This

["couldbecousin"]

A very private one.  I would have lots of land and workshops for my tinkering and experiments but few if any employees.  Few would know I had money.  I don't think I would act that much different than I do now except for being able to get what ever I wanted  

^
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This

Also,  90 ton log splitter! 

[Diesel]

that too

[Natalia Evans]

I'd buy a nice house up on the hill in a nice neighborhood and I wouldn't have to worry about budgeting again. It takes me years before I run out of money. I'd be able to have more kids too and buy a mini van and try and adopt.

How many kids do you want?

Three or four.