OP I used to be you (well sort of). Hubbie and I both had good paying jobs and we had a nice house (with mortgage) and two expensive cars which we used to change alot. We spent a fortune doing house up and took expensive holidays. We didn't have huge debts apart from the mortgage and car loans but were did spend everything we earned which was disgraceful really.
I had expensive clothes, expensive make up, expensive watches etc etc
it was 2007 and life was good. Both jobs were secure.
Then the 2008 period came upon us all and all of a sudden things weren't so rosy anymore. Husbands work put them all down to 4 days per week and were talking about 3 days per week. Boss at my work (manufacturing plant) said we might turn up for work and find the gates locked cos the company had went kaput. Suddenly our big mortgage looked very frightening and we had no savings to fall back on. House prices fell and so lots of people couldn't sell or had to sell at a loss. Jobs dried up and life just went from rosy and worry free to really scary.
That would be my worry for you. Just now you can keep it all going but it only takes one thing to bring the whole house down. It can be illness or redundancy or the economy. It can sneak up on you or just happen overnight.
I really would if I was you take a more moderate way. Have a holiday if you must but just one. Pay that debt off. Build up some savings. As other posters have pointed out the UK economy is in a weird place. In fact the recent housing boom reminds me very much of the 2007 housing boom.
I hope things work out for you.
I have made lots of bad decisions in my life and lucky for me I had parents who helped me out. I now live in a modest house with a 10 year old car but I don't have any debt or mortgage and I have savings. I buy little clothes (no interest really now) and rarely go on holiday. I do spend money on good food, my pets and more recently artwork. I also spend money on plants/growing stuff and I quite fancy learning to play piano. My phone is 7 years old, my laptop about the same and so is my kindle. I only replace them when I have to.
It's good to spend a little money on things to make your life better/nicer as like you say you only live once. However try and get a balance of 'spend some, save some' especially just now with the UK economy looking a bit dire.