If it makes you feel good about yourself, do it. If it doesn't, don't.
People who want/need to look like they've spent hours working on their appearance are great, good for them if it's what makes them happy, but I take the approach of wanting to appear, well effortless.
I had a childhood heroine of a retired lady/housewife who wanted to do something for the less fortunate children who came into our school and helped out by giving her time to things like embroidery, reading and doing 'nice' things - Mrs Watts could have been 40, she could have been 80 for all I knew, but she had a perfect, pure white jaw length bob, quiet jewellery, perfect clothes and she had an air of calm and ease that was completely alien to a grubby little grot like me. I wanted so much to be like her when I grew up and glide into a room, rather than thunder in to looks of barely disguised horror and disapproval.
I sort out the basics - good haircut that falls into place, hair removal, eyebrow threading, skin and hair care that makes everything feel its best immediately - and DP does my nails/pedicure and weekly massages. Makeup is the perfect shade and texture (no point spending a hundred on ten things that aren't quite right or need to be mixed with fifteen others; just get the right one first time).
I concentrate my energies on what I see as needed for health - massage, medical treatment, osteopathy, orthotics, dental care, vitamins, a good diet, gentle exercise - I'm high maintenance there - and on the best quality clothes, shoes, jewellery and accessories I can afford that fit and suit me.
If I had the disposable, I'd probably have professional facial treatments just because they feel good. Same way I'd have professional pedicures because the salon has one of those chairs that turns me into jelly from the back pummelling. But it wouldn't make that much of a difference cosmetically (and I've earned my crows' feet - I have quite enough needles on a weekly/monthly/quarterly basis to ever consider paying somebody good money to stick more into me).
Different strokes for different folks, is what I'm trying to say - some people want others to think 'She looks great, she works really hard at maintaining her standards', I'm happy with 'I think she just looks like that naturally'.