I think the Airsofts are great for home training and I do it all the time.
I have Gas Blow Blacks for a Glock 19 and a 1911.
The Glock is a KWA and I have shot over 16,000 BB's through it with no problems at all. In fact, I didn't expect it to really last a long time and bought some spares but have not used them yet.
I use Coleman Propane Bottles for gas and in warm temps can get over 6,000 shots per bottle at a cost of less than $3.00 ea.
I gave one of my spares to my Grandson and he has shot I don't know how many through his and as of today, it is still going strong.
My 1911 is a WE Tactical and it gave problems at first and broke parts but after replacing them and cuting a little of the guide rod, it is going strong as well but I have not shot it as much as the KWA Glock.